THE HIDDEN GEM
THE HIDDEN GEM
Opening hours
- Sunday
- Closed
- Monday
- 9 AM - 2 PM
- Tuesday
- 9 AM - 2 PM
- Wednesday
- 9 AM - 2 PM
- Thursday
- 9 AM - 2 PM
- Friday
- 9 AM - 2 PM
- Saturday
- 9 AM - 2 PM
2210 Taylor Rd, Ste A, Penryn, CA 95663, United States
Our Booking PolicyBooking & Appointment Policy
Our regular shop hours are Monday through Friday, 9:00 AM to 2:00 PM. Because The Hidden Gem operates with flexible hours, visits outside this window are available by appointment only.
Our regular shop hours are Monday through Friday, 9:00 AM to 2:00 PM. Because The Hidden Gem operates with flexible hours, visits outside this window are available by appointment only.
Booking & Appointment Policy
Our regular shop hours are Monday through Friday, 9:00 AM to 2:00 PM. Because The Hidden Gem operates with flexible hours, visits outside this window are available by appointment only.
Services
Professional cutting for rocks, geodes, thunder eggs, minerals, and field finds measuring up to 3 inches.
Includes the required one-hour bench minimum and one standard cut. Additional cuts are $20 each. Polishing, shaping, and additional bench time are priced separately. Final approval is subject to inspection of the stone.
Includes the required one-hour bench minimum and one standard cut. Additional cuts are $20 each. Polishing, shaping, and additional bench time are priced separately. Final approval is subject to inspection of the stone.
Professional cutting for rocks, geodes, thunder eggs, minerals, and field finds measuring over 3 inches and up to 6 inches. Includes the required one-hour bench minimum and one standard cut. Additional cuts are $40 each. Polishing, shaping, and additional bench time are priced separately. Final approval is subject to inspection of the stone.
Professional cutting for rocks, geodes, thunder eggs, minerals, and field finds measuring over 6 inches and up to 8 inches. Includes the required one-hour bench minimum and one standard cut. Additional cuts are $40 each. Polishing, shaping, and additional bench time are priced separately. Final approval is subject to inspection of the stone.
Difficult / Irregular Rock Cutting
For unusually shaped, fragile, fractured, hard-to-secure, or challenging stones that require extra setup, positioning, and careful handling. This specialty service is designed for rocks that need more time and attention than a standard cut. It may apply to odd shapes, unstable material, multiple fractures, or stones that are difficult to safely secure on the saw.
For unusually shaped, fragile, fractured, hard-to-secure, or challenging stones that require extra setup, positioning, and careful handling. This specialty service is designed for rocks that need more time and attention than a standard cut. It may apply to odd shapes, unstable material, multiple fractures, or stones that are difficult to safely secure on the saw.
Transform a freshly cut stone into a brilliant display piece.
This service includes one hour of bench time and professional flat-face polishing through multiple diamond polishing stages to achieve the highest finish the material will allow. Ideal for agates, jasper, petrified wood, quartz, and many other lapidary materials.
Includes:
• One polished face up to 3 inches
• Progressive diamond polishing
• Final inspection and finish
Additional faces, difficult materials, or deep saw marks may require additional bench time.
This service includes one hour of bench time and professional flat-face polishing through multiple diamond polishing stages to achieve the highest finish the material will allow. Ideal for agates, jasper, petrified wood, quartz, and many other lapidary materials.
Includes:
• One polished face up to 3 inches
• Progressive diamond polishing
• Final inspection and finish
Additional faces, difficult materials, or deep saw marks may require additional bench time.
Transform a freshly cut stone into a brilliant display piece.
This service includes one hour of bench time and professional flat-face polishing through multiple diamond polishing stages to achieve the highest finish the material will allow. Ideal for agates, jasper, petrified wood, quartz, and many other lapidary materials.
Includes:
• One polished face up to 6 inches
• Progressive diamond polishing
• Final inspection and finish
Additional faces, difficult materials, or deep saw marks may require additional bench time.
This service includes one hour of bench time and professional flat-face polishing through multiple diamond polishing stages to achieve the highest finish the material will allow. Ideal for agates, jasper, petrified wood, quartz, and many other lapidary materials.
Includes:
• One polished face up to 6 inches
• Progressive diamond polishing
• Final inspection and finish
Additional faces, difficult materials, or deep saw marks may require additional bench time.
Transform a freshly cut stone into a brilliant display piece.
This service includes one hour of bench time and professional flat-face polishing through multiple diamond polishing stages to achieve the highest finish the material will allow. Ideal for agates, jasper, petrified wood, quartz, and many other lapidary materials.
Includes:
• One polished face up to 8 inches
• Progressive diamond polishing
• Final inspection and finish
Additional faces, difficult materials, or deep saw marks may require additional bench time.
This service includes one hour of bench time and professional flat-face polishing through multiple diamond polishing stages to achieve the highest finish the material will allow. Ideal for agates, jasper, petrified wood, quartz, and many other lapidary materials.
Includes:
• One polished face up to 8 inches
• Progressive diamond polishing
• Final inspection and finish
Additional faces, difficult materials, or deep saw marks may require additional bench time.
Some stones require more than the standard appointment to achieve the best possible result.
This service covers additional bench time for unusually shaped, fractured, fragile, unstable, or difficult-to-work materials that require extra setup, careful handling, or extended polishing and finishing.
Additional bench time may be recommended for:
* Deep saw marks or heavy surface damage
* Irregular shapes that require custom positioning
* Hard or dense materials requiring longer polishing
* Fractures, pits, vugs, or unstable areas
* Large flat surfaces needing additional finishing
* Premium mirror-finish requests
**Rate:** $45 per additional hour.
We will always discuss any recommended additional bench time with you before proceeding. Our goal is to achieve the highest quality finish your stone will safely allow while treating every specimen with the care it deserves.
This service covers additional bench time for unusually shaped, fractured, fragile, unstable, or difficult-to-work materials that require extra setup, careful handling, or extended polishing and finishing.
Additional bench time may be recommended for:
* Deep saw marks or heavy surface damage
* Irregular shapes that require custom positioning
* Hard or dense materials requiring longer polishing
* Fractures, pits, vugs, or unstable areas
* Large flat surfaces needing additional finishing
* Premium mirror-finish requests
**Rate:** $45 per additional hour.
We will always discuss any recommended additional bench time with you before proceeding. Our goal is to achieve the highest quality finish your stone will safely allow while treating every specimen with the care it deserves.
Give your stone the attention it deserves with a professional full-face polish.
Unlike a standard flat-face polish, this service refines and polishes the entire surface, bringing out the deepest colors, natural patterns, and highest luster the material will allow. Because the entire faces are worked through multiple diamond polishing stages, this service requires substantially more time and precision.
* Up to 3 inches: **$250**
* Up to 6 inches: **$285**
* Up to 8 inches: **$345**
**Includes:**
* Approximately 3-5 hours of bench time
* Complete polishing of all faces
* Progressive diamond polishing through multiple stages
* Final inspection and finish
Additional bench time for unusually hard materials, deep saw marks, fractures, pits, vugs, or irregular surfaces is billed at **$45 per hour** and will always be discussed before work begins.
Every stone is unique. The final finish depends on the material, its condition, and its natural characteristics. Our goal is to achieve the highest quality finish your specimen will safely allow.
Unlike a standard flat-face polish, this service refines and polishes the entire surface, bringing out the deepest colors, natural patterns, and highest luster the material will allow. Because the entire faces are worked through multiple diamond polishing stages, this service requires substantially more time and precision.
* Up to 3 inches: **$250**
* Up to 6 inches: **$285**
* Up to 8 inches: **$345**
**Includes:**
* Approximately 3-5 hours of bench time
* Complete polishing of all faces
* Progressive diamond polishing through multiple stages
* Final inspection and finish
Additional bench time for unusually hard materials, deep saw marks, fractures, pits, vugs, or irregular surfaces is billed at **$45 per hour** and will always be discussed before work begins.
Every stone is unique. The final finish depends on the material, its condition, and its natural characteristics. Our goal is to achieve the highest quality finish your specimen will safely allow.
Give your stone the attention it deserves with a professional full-face polish.
Unlike a standard flat-face polish, this service refines and polishes the entire surface, bringing out the deepest colors, natural patterns, and highest luster the material will allow. Because the entire faces are worked through multiple diamond polishing stages, this service requires substantially more time and precision.
* Up to 3 inches: **$250**
* Up to 6 inches: **$285**
* Up to 8 inches: **$345**
**Includes:**
* Approximately 3-5 hours of bench time
* Complete polishing of all faces
* Progressive diamond polishing through multiple stages
* Final inspection and finish
Additional bench time for unusually hard materials, deep saw marks, fractures, pits, vugs, or irregular surfaces is billed at **$45 per hour** and will always be discussed before work begins.
Every stone is unique. The final finish depends on the material, its condition, and its natural characteristics. Our goal is to achieve the highest quality finish your specimen will safely allow.
Unlike a standard flat-face polish, this service refines and polishes the entire surface, bringing out the deepest colors, natural patterns, and highest luster the material will allow. Because the entire faces are worked through multiple diamond polishing stages, this service requires substantially more time and precision.
* Up to 3 inches: **$250**
* Up to 6 inches: **$285**
* Up to 8 inches: **$345**
**Includes:**
* Approximately 3-5 hours of bench time
* Complete polishing of all faces
* Progressive diamond polishing through multiple stages
* Final inspection and finish
Additional bench time for unusually hard materials, deep saw marks, fractures, pits, vugs, or irregular surfaces is billed at **$45 per hour** and will always be discussed before work begins.
Every stone is unique. The final finish depends on the material, its condition, and its natural characteristics. Our goal is to achieve the highest quality finish your specimen will safely allow.
Give your stone the attention it deserves with a professional full-face polish.
Unlike a standard flat-face polish, this service refines and polishes the entire surface, bringing out the deepest colors, natural patterns, and highest luster the material will allow. Because the entire faces are worked through multiple diamond polishing stages, this service requires substantially more time and precision.
* Up to 3 inches: **$250**
* Up to 6 inches: **$285**
* Up to 8 inches: **$345**
**Includes:**
* Approximately 3-5 hours of bench time
* Complete polishing of all faces
* Progressive diamond polishing through multiple stages
* Final inspection and finish
Additional bench time for unusually hard materials, deep saw marks, fractures, pits, vugs, or irregular surfaces is billed at **$45 per hour** and will always be discussed before work begins.
Every stone is unique. The final finish depends on the material, its condition, and its natural characteristics. Our goal is to achieve the highest quality finish your specimen will safely allow.
Unlike a standard flat-face polish, this service refines and polishes the entire surface, bringing out the deepest colors, natural patterns, and highest luster the material will allow. Because the entire faces are worked through multiple diamond polishing stages, this service requires substantially more time and precision.
* Up to 3 inches: **$250**
* Up to 6 inches: **$285**
* Up to 8 inches: **$345**
**Includes:**
* Approximately 3-5 hours of bench time
* Complete polishing of all faces
* Progressive diamond polishing through multiple stages
* Final inspection and finish
Additional bench time for unusually hard materials, deep saw marks, fractures, pits, vugs, or irregular surfaces is billed at **$45 per hour** and will always be discussed before work begins.
Every stone is unique. The final finish depends on the material, its condition, and its natural characteristics. Our goal is to achieve the highest quality finish your specimen will safely allow.
Transform your rough stone into a professionally handcrafted calibrated cabochon, precision-shaped to standard jewelry sizes for use in rings, pendants, bracelets, earrings, and custom settings.
Each cabochon is individually planned to maximize the beauty of your material while maintaining the dimensions required for calibrated jewelry settings. Every piece is carefully cut, shaped, domed, sanded, and polished through multiple stages to achieve the highest finish your stone will allow.
**Starting at $150**
**Includes:**
* Professional layout and design
* Precision trimming and shaping
* Standard calibrated sizing
* Smooth, even dome
* Progressive diamond sanding and polishing
* Final inspection and finish
**Common calibrated shapes:**
* Oval
* Round
* Pear
* Marquise
* Rectangle
* Square
* Cushion
Customer-supplied material must be suitable for lapidary work. Pricing may vary depending on stone hardness, fractures, stability, complexity, or if additional bench time is required.
Every stone is unique, and our goal is to create a cabochon that showcases its natural beauty while meeting professional jewelry-making standards.
Each cabochon is individually planned to maximize the beauty of your material while maintaining the dimensions required for calibrated jewelry settings. Every piece is carefully cut, shaped, domed, sanded, and polished through multiple stages to achieve the highest finish your stone will allow.
**Starting at $150**
**Includes:**
* Professional layout and design
* Precision trimming and shaping
* Standard calibrated sizing
* Smooth, even dome
* Progressive diamond sanding and polishing
* Final inspection and finish
**Common calibrated shapes:**
* Oval
* Round
* Pear
* Marquise
* Rectangle
* Square
* Cushion
Customer-supplied material must be suitable for lapidary work. Pricing may vary depending on stone hardness, fractures, stability, complexity, or if additional bench time is required.
Every stone is unique, and our goal is to create a cabochon that showcases its natural beauty while meeting professional jewelry-making standards.
Transform your rough stone into a professionally handcrafted calibrated cabochon, precision-shaped to standard jewelry sizes for use in rings, pendants, bracelets, earrings, and custom settings.
Each cabochon is individually planned to maximize the beauty of your material while maintaining the dimensions required for calibrated jewelry settings. Every piece is carefully cut, shaped, domed, sanded, and polished through multiple stages to achieve the highest finish your stone will allow.
**Starting at $150**
**Includes:**
* Professional layout and design
* Precision trimming and shaping
* Standard calibrated sizing
* Smooth, even dome
* Progressive diamond sanding and polishing
* Final inspection and finish
**Common calibrated shapes:**
* Oval
* Round
* Pear
* Marquise
* Rectangle
* Square
* Cushion
Customer-supplied material must be suitable for lapidary work. Pricing may vary depending on stone hardness, fractures, stability, complexity, or if additional bench time is required.
Every stone is unique, and our goal is to create a cabochon that showcases its natural beauty while meeting professional jewelry-making standards.
Each cabochon is individually planned to maximize the beauty of your material while maintaining the dimensions required for calibrated jewelry settings. Every piece is carefully cut, shaped, domed, sanded, and polished through multiple stages to achieve the highest finish your stone will allow.
**Starting at $150**
**Includes:**
* Professional layout and design
* Precision trimming and shaping
* Standard calibrated sizing
* Smooth, even dome
* Progressive diamond sanding and polishing
* Final inspection and finish
**Common calibrated shapes:**
* Oval
* Round
* Pear
* Marquise
* Rectangle
* Square
* Cushion
Customer-supplied material must be suitable for lapidary work. Pricing may vary depending on stone hardness, fractures, stability, complexity, or if additional bench time is required.
Every stone is unique, and our goal is to create a cabochon that showcases its natural beauty while meeting professional jewelry-making standards.
**Professional Stone Drilling**
Turn your favorite stone into a piece that's ready for jewelry, keychains, macramé, ornaments, or custom creations with our precision diamond drilling service.
Each stone is carefully inspected, marked, securely positioned, and drilled using professional diamond tooling and water cooling to produce a clean, accurate hole while minimizing stress on the material. Every piece is finished with a final inspection to ensure the highest quality possible.
**$85 per stone**
**Includes:**
* Up to 60 minutes of bench time
* Professional placement and layout
* Precision diamond drilling
* Water-cooled drilling process
* Final cleaning and inspection
Ideal for:
* Pendants
* Earrings
* Bracelets
* Keychains
* Macramé projects
* Wire wrapping
* Custom jewelry
Most stones can be drilled safely, including agate, jasper, quartz, petrified wood, labradorite, obsidian, and many other lapidary materials.
Additional holes, unusually hard materials, fragile specimens, oversized stones, or custom drilling projects may require additional bench time at **$45 per hour**, which will always be discussed and approved before any additional work begins. Every stone is unique, and our goal is to preserve its natural beauty while providing a clean,
Turn your favorite stone into a piece that's ready for jewelry, keychains, macramé, ornaments, or custom creations with our precision diamond drilling service.
Each stone is carefully inspected, marked, securely positioned, and drilled using professional diamond tooling and water cooling to produce a clean, accurate hole while minimizing stress on the material. Every piece is finished with a final inspection to ensure the highest quality possible.
**$85 per stone**
**Includes:**
* Up to 60 minutes of bench time
* Professional placement and layout
* Precision diamond drilling
* Water-cooled drilling process
* Final cleaning and inspection
Ideal for:
* Pendants
* Earrings
* Bracelets
* Keychains
* Macramé projects
* Wire wrapping
* Custom jewelry
Most stones can be drilled safely, including agate, jasper, quartz, petrified wood, labradorite, obsidian, and many other lapidary materials.
Additional holes, unusually hard materials, fragile specimens, oversized stones, or custom drilling projects may require additional bench time at **$45 per hour**, which will always be discussed and approved before any additional work begins. Every stone is unique, and our goal is to preserve its natural beauty while providing a clean,
✨ Jewelry Refresh
$25 • 20 minutes
Perfect for routine maintenance.
Includes:
Professional inspection
Steam rinse
Professional drying
Final shine
Best for regularly worn jewelry with everyday buildup.
$25 • 20 minutes
Perfect for routine maintenance.
Includes:
Professional inspection
Steam rinse
Professional drying
Final shine
Best for regularly worn jewelry with everyday buildup.
$45 • 30 minutes
Bring back the sparkle.
Includes:
Complete inspection
Ultrasonic cleaning
Steam cleaning
Hand detailing
Stone and setting inspection
Final polish
Ideal for jewelry that hasn't been cleaned in months.
Bring back the sparkle.
Includes:
Complete inspection
Ultrasonic cleaning
Steam cleaning
Hand detailing
Stone and setting inspection
Final polish
Ideal for jewelry that hasn't been cleaned in months.
$75 • 45 minutes
Our premium cleaning service.
Includes:
Complete inspection
Ultrasonic cleaning (if appropriate)
Steam cleaning
Hand detailing
Crevice cleaning
Professional polishing
Stone and prong inspection
Final quality check
Perfect before weddings, anniversaries, vacations, or special occasions.
Our premium cleaning service.
Includes:
Complete inspection
Ultrasonic cleaning (if appropriate)
Steam cleaning
Hand detailing
Crevice cleaning
Professional polishing
Stone and prong inspection
Final quality check
Perfect before weddings, anniversaries, vacations, or special occasions.
Refresh your crystals, jewelry, and sacred objects through a respectful smoke cleansing ceremony rooted in traditional practices.
At The Hidden Gem, each item is individually cleansed using an antique handcrafted clay Popoxcom copalero from a Shaman from Oaxaca with sustainably sourced cleansing materials. This optional service is designed for those who appreciate the spiritual traditions of smoke cleansing and wish to begin a new chapter with their treasured pieces.
Many people choose smoke cleansing to symbolically:
* Release stagnant or unwanted energy
* Welcome new beginnings
* Set personal intentions
* Prepare crystals for meditation or spiritual practice
* Create a sense of balance, clarity, and renewal
**Starting at $15 per item**
**Perfect For:**
* Crystals
* Crystal spheres
* Towers and points
* Palm stones
* Jewelry
* Meditation tools
* Altar pieces
* New crystal purchases
* Meaningful gifts
**Service Includes:**
* Respectful individual smoke cleansing from sacred woods
* Gentle handling of each item
* Optional intention setting before the ceremony
* Thoughtful presentation upon completion
*This service is offered as a symbolic and spiritual practice for those who value these traditions. It is not intended as a medical, psychological, or scientific treatment, and individual beliefs and experiences may vary.*
At The Hidden Gem, each item is individually cleansed using an antique handcrafted clay Popoxcom copalero from a Shaman from Oaxaca with sustainably sourced cleansing materials. This optional service is designed for those who appreciate the spiritual traditions of smoke cleansing and wish to begin a new chapter with their treasured pieces.
Many people choose smoke cleansing to symbolically:
* Release stagnant or unwanted energy
* Welcome new beginnings
* Set personal intentions
* Prepare crystals for meditation or spiritual practice
* Create a sense of balance, clarity, and renewal
**Starting at $15 per item**
**Perfect For:**
* Crystals
* Crystal spheres
* Towers and points
* Palm stones
* Jewelry
* Meditation tools
* Altar pieces
* New crystal purchases
* Meaningful gifts
**Service Includes:**
* Respectful individual smoke cleansing from sacred woods
* Gentle handling of each item
* Optional intention setting before the ceremony
* Thoughtful presentation upon completion
*This service is offered as a symbolic and spiritual practice for those who value these traditions. It is not intended as a medical, psychological, or scientific treatment, and individual beliefs and experiences may vary.*
Refresh the energy and beauty of your favorite crystals with our professional Crystal & Sphere Cleansing service.
Whether you view your crystals as spiritual tools, meditation companions, or treasured collectibles, we provide a respectful, careful cleaning experience designed to remove everyday dust, fingerprints, and buildup while helping your pieces look their absolute best.
Every crystal is individually inspected and cleaned using mineral-safe techniques appropriate for its unique hardness and composition. Delicate materials are handled with extra care to preserve their natural beauty.
**Starting at $25**
Perfect for:
* Crystal collections
* Spheres
* Towers
* Palm stones
* Hearts
* Freeforms
* Carvings
* Tumbled stones
* Display specimens
**Service Includes:**
* Individual crystal inspection
* Gentle mineral-safe cleaning
* Sphere and polished stone detailing
* Soft hand finishing
* Final presentation polish
Some minerals require specialized handling and may not be suitable for water or ultrasonic cleaning. Every specimen is evaluated individually to ensure the safest cleaning method is used.
Whether you view your crystals as spiritual tools, meditation companions, or treasured collectibles, we provide a respectful, careful cleaning experience designed to remove everyday dust, fingerprints, and buildup while helping your pieces look their absolute best.
Every crystal is individually inspected and cleaned using mineral-safe techniques appropriate for its unique hardness and composition. Delicate materials are handled with extra care to preserve their natural beauty.
**Starting at $25**
Perfect for:
* Crystal collections
* Spheres
* Towers
* Palm stones
* Hearts
* Freeforms
* Carvings
* Tumbled stones
* Display specimens
**Service Includes:**
* Individual crystal inspection
* Gentle mineral-safe cleaning
* Sphere and polished stone detailing
* Soft hand finishing
* Final presentation polish
Some minerals require specialized handling and may not be suitable for water or ultrasonic cleaning. Every specimen is evaluated individually to ensure the safest cleaning method is used.
Certified Bench Rental
Complete The Hidden Gem's required lapidary courses to unlock access to our professional workshop. Once certified, you'll be able to reserve fully equipped lapidary benches to cut, shape, and polish your own stones in a safe, supportive environment without the expense of owning your own equipment.
Perfect for practicing your skills, completing personal projects, or continuing your lapidary journey alongside fellow rock enthusiasts.
Certification Required: Bench rentals are available exclusively to students who have completed our required training and demonstrated safe equipment operation.
Complete The Hidden Gem's required lapidary courses to unlock access to our professional workshop. Once certified, you'll be able to reserve fully equipped lapidary benches to cut, shape, and polish your own stones in a safe, supportive environment without the expense of owning your own equipment.
Perfect for practicing your skills, completing personal projects, or continuing your lapidary journey alongside fellow rock enthusiasts.
Certification Required: Bench rentals are available exclusively to students who have completed our required training and demonstrated safe equipment operation.
Certified Bench Rental
Complete The Hidden Gem's required lapidary courses to unlock access to our professional workshop. Once certified, you'll be able to reserve fully equipped lapidary benches to cut, shape, and polish your own stones in a safe, supportive environment without the expense of owning your own equipment.
Perfect for practicing your skills, completing personal projects, or continuing your lapidary journey alongside fellow rock enthusiasts.
Certification Required: Bench rentals are available exclusively to students who have completed our required training and demonstrated safe equipment operation.
Complete The Hidden Gem's required lapidary courses to unlock access to our professional workshop. Once certified, you'll be able to reserve fully equipped lapidary benches to cut, shape, and polish your own stones in a safe, supportive environment without the expense of owning your own equipment.
Perfect for practicing your skills, completing personal projects, or continuing your lapidary journey alongside fellow rock enthusiasts.
Certification Required: Bench rentals are available exclusively to students who have completed our required training and demonstrated safe equipment operation.
**Bench Safety Course**
Before using The Hidden Gem Lapidary Arts Studio independently, every guest must complete our **Bench Safety Course**. This class is designed to make sure you understand how to work safely, confidently, and respectfully around shared studio equipment.
We’ll cover proper PPE, eye and respiratory protection, safe clothing and hair practices, water and electrical safety, emergency shutoffs, correct workstation setup, tool inspection, cleanup procedures, and what to do if equipment is damaged or behaving unexpectedly.
You’ll also learn the studio rules for our **Lapidary, Rotary, Finishing, Metal, Clay, Digital/3D, Laser Engraving, and other shared work areas**, including which equipment requires additional training before use.
**Important:** Completing this course does not automatically certify you to operate every machine. Certain equipment may require a separate fundamentals class or staff approval. You can take our lapidary 101 class that certifies your use of all equipment at the hidden gem!
Once completed, you’ll be eligible to book approved studio benches and work more independently within your training level.
**Safety first. Create confidently. Respect the tools, the studio, and the artists working around you.**
Before using The Hidden Gem Lapidary Arts Studio independently, every guest must complete our **Bench Safety Course**. This class is designed to make sure you understand how to work safely, confidently, and respectfully around shared studio equipment.
We’ll cover proper PPE, eye and respiratory protection, safe clothing and hair practices, water and electrical safety, emergency shutoffs, correct workstation setup, tool inspection, cleanup procedures, and what to do if equipment is damaged or behaving unexpectedly.
You’ll also learn the studio rules for our **Lapidary, Rotary, Finishing, Metal, Clay, Digital/3D, Laser Engraving, and other shared work areas**, including which equipment requires additional training before use.
**Important:** Completing this course does not automatically certify you to operate every machine. Certain equipment may require a separate fundamentals class or staff approval. You can take our lapidary 101 class that certifies your use of all equipment at the hidden gem!
Once completed, you’ll be eligible to book approved studio benches and work more independently within your training level.
**Safety first. Create confidently. Respect the tools, the studio, and the artists working around you.**
Want The Hidden Gem all to yourself? 💎
Book a **Private Shopping Experience** and enjoy exclusive access to the shop without the crowds or distractions. Take your time exploring our hand-selected collection of crystals, minerals, fossils, rough rock, slabs, cabochons, jewelry, lapidary material, and one-of-a-kind treasures.
We’ll be available to personally help you discover pieces that match what you’re looking for, answer questions, share the stories behind specimens, and even pull out special inventory that may not normally be on display.
Perfect for collectors, rockhounds, families, gift shopping, or anyone who simply wants more time to explore.
✨ Private access to the shop
💎 Personalized help & recommendations
🪨 Explore unique and limited specimens
🔐 Ask to see special inventory
🎁 Great for collectors & gift shopping
**Your time. Your treasure hunt. The entire shop.**
Book a **Private Shopping Experience** and enjoy exclusive access to the shop without the crowds or distractions. Take your time exploring our hand-selected collection of crystals, minerals, fossils, rough rock, slabs, cabochons, jewelry, lapidary material, and one-of-a-kind treasures.
We’ll be available to personally help you discover pieces that match what you’re looking for, answer questions, share the stories behind specimens, and even pull out special inventory that may not normally be on display.
Perfect for collectors, rockhounds, families, gift shopping, or anyone who simply wants more time to explore.
✨ Private access to the shop
💎 Personalized help & recommendations
🪨 Explore unique and limited specimens
🔐 Ask to see special inventory
🎁 Great for collectors & gift shopping
**Your time. Your treasure hunt. The entire shop.**
1-Hour Metal Detecting Search & Recovery
Perfect for lost rings, jewelry, keys, coins, and other valuable metal items when you have a good idea of where they were lost. Includes up to 1 hour of professional on-site searching using advanced metal detecting equipment and proven recovery techniques.
Ideal for yards, parks, trails, fields, beaches, and other accessible land areas. We’ll focus the search where the odds are highest and work efficiently to help recover your item.
1 Hour • $150
Metal Detecting Search & Recovery Disclaimer
Recovery is not guaranteed. Metal detecting searches are performed on a best-effort basis using professional equipment, experience, and the information provided by the customer. Many factors can affect the outcome of a search, including the accuracy of the reported loss location, soil and ground conditions, item depth, surrounding metal, terrain, accessibility, environmental conditions, and whether the item has been moved or removed.
Payment is for the time, equipment, travel, and professional search service provided, not for a guaranteed recovery. Fees are due regardless of whether the lost item is found.
By booking a search, the customer acknowledges and accepts that The Hidden Gem Loomis cannot guarantee the recovery of any lost item.
Perfect for lost rings, jewelry, keys, coins, and other valuable metal items when you have a good idea of where they were lost. Includes up to 1 hour of professional on-site searching using advanced metal detecting equipment and proven recovery techniques.
Ideal for yards, parks, trails, fields, beaches, and other accessible land areas. We’ll focus the search where the odds are highest and work efficiently to help recover your item.
1 Hour • $150
Metal Detecting Search & Recovery Disclaimer
Recovery is not guaranteed. Metal detecting searches are performed on a best-effort basis using professional equipment, experience, and the information provided by the customer. Many factors can affect the outcome of a search, including the accuracy of the reported loss location, soil and ground conditions, item depth, surrounding metal, terrain, accessibility, environmental conditions, and whether the item has been moved or removed.
Payment is for the time, equipment, travel, and professional search service provided, not for a guaranteed recovery. Fees are due regardless of whether the lost item is found.
By booking a search, the customer acknowledges and accepts that The Hidden Gem Loomis cannot guarantee the recovery of any lost item.
2 Hours Metal Detecting Search & Recovery
Perfect for lost rings, jewelry, keys, coins, and other valuable metal items when you have a good idea of where they were lost. Includes up to 2 hour of professional on-site searching using advanced metal detecting equipment and proven recovery techniques.
Ideal for yards, parks, trails, fields, beaches, and other accessible land areas. We’ll focus the search where the odds are highest and work efficiently to help recover your item.
2 Hours • $275
Metal Detecting Search & Recovery Disclaimer
Recovery is not guaranteed. Metal detecting searches are performed on a best-effort basis using professional equipment, experience, and the information provided by the customer. Many factors can affect the outcome of a search, including the accuracy of the reported loss location, soil and ground conditions, item depth, surrounding metal, terrain, accessibility, environmental conditions, and whether the item has been moved or removed.
Payment is for the time, equipment, travel, and professional search service provided, not for a guaranteed recovery. Fees are due regardless of whether the lost item is found.
By booking a search, the customer acknowledges and accepts that The Hidden Gem Loomis cannot guarantee the recovery of any lost item.
Perfect for lost rings, jewelry, keys, coins, and other valuable metal items when you have a good idea of where they were lost. Includes up to 2 hour of professional on-site searching using advanced metal detecting equipment and proven recovery techniques.
Ideal for yards, parks, trails, fields, beaches, and other accessible land areas. We’ll focus the search where the odds are highest and work efficiently to help recover your item.
2 Hours • $275
Metal Detecting Search & Recovery Disclaimer
Recovery is not guaranteed. Metal detecting searches are performed on a best-effort basis using professional equipment, experience, and the information provided by the customer. Many factors can affect the outcome of a search, including the accuracy of the reported loss location, soil and ground conditions, item depth, surrounding metal, terrain, accessibility, environmental conditions, and whether the item has been moved or removed.
Payment is for the time, equipment, travel, and professional search service provided, not for a guaranteed recovery. Fees are due regardless of whether the lost item is found.
By booking a search, the customer acknowledges and accepts that The Hidden Gem Loomis cannot guarantee the recovery of any lost item.
4 Hours Metal Detecting Search & Recovery
Perfect for lost rings, jewelry, keys, coins, and other valuable metal items when you have a good idea of where they were lost. Includes up to 4 hour of professional on-site searching using advanced metal detecting equipment and proven recovery techniques.
Ideal for yards, parks, trails, fields, beaches, and other accessible land areas. We’ll focus the search where the odds are highest and work efficiently to help recover your item.
4 Hours • $275
Metal Detecting Search & Recovery Disclaimer
Recovery is not guaranteed. Metal detecting searches are performed on a best-effort basis using professional equipment, experience, and the information provided by the customer. Many factors can affect the outcome of a search, including the accuracy of the reported loss location, soil and ground conditions, item depth, surrounding metal, terrain, accessibility, environmental conditions, and whether the item has been moved or removed.
Payment is for the time, equipment, travel, and professional search service provided, not for a guaranteed recovery. Fees are due regardless of whether the lost item is found.
By booking a search, the customer acknowledges and accepts that The Hidden Gem Loomis cannot guarantee the recovery of any lost item.
Perfect for lost rings, jewelry, keys, coins, and other valuable metal items when you have a good idea of where they were lost. Includes up to 4 hour of professional on-site searching using advanced metal detecting equipment and proven recovery techniques.
Ideal for yards, parks, trails, fields, beaches, and other accessible land areas. We’ll focus the search where the odds are highest and work efficiently to help recover your item.
4 Hours • $275
Metal Detecting Search & Recovery Disclaimer
Recovery is not guaranteed. Metal detecting searches are performed on a best-effort basis using professional equipment, experience, and the information provided by the customer. Many factors can affect the outcome of a search, including the accuracy of the reported loss location, soil and ground conditions, item depth, surrounding metal, terrain, accessibility, environmental conditions, and whether the item has been moved or removed.
Payment is for the time, equipment, travel, and professional search service provided, not for a guaranteed recovery. Fees are due regardless of whether the lost item is found.
By booking a search, the customer acknowledges and accepts that The Hidden Gem Loomis cannot guarantee the recovery of any lost item.
**Flat Rate Shipping**
Simple, predictable shipping with no surprises. Pay one flat shipping rate for your order, regardless of how many eligible rocks, minerals, crystals, or lapidary items you add.
We carefully pack every order to help protect your treasures in transit. Because many of our pieces are naturally heavy, fragile, or one-of-a-kind, oversized and exceptionally heavy items may require additional shipping charges. If that applies, we’ll contact you before shipment.
📦 **One flat rate. More rocks. Less worrying about the shipping calculator.**
Simple, predictable shipping with no surprises. Pay one flat shipping rate for your order, regardless of how many eligible rocks, minerals, crystals, or lapidary items you add.
We carefully pack every order to help protect your treasures in transit. Because many of our pieces are naturally heavy, fragile, or one-of-a-kind, oversized and exceptionally heavy items may require additional shipping charges. If that applies, we’ll contact you before shipment.
📦 **One flat rate. More rocks. Less worrying about the shipping calculator.**
Team
About
Welcome to The Hidden Gem, where every stone has a story waiting beneath the surface.
Located in Penryn, California, The Hidden Gem is a one-of-a-kind destination for rocks, minerals, crystals, fossils, oddities, wellness treasures, and the art of lapidary. Explore hand-selected specimens, locally sourced materials, polished stones, cabochons, unique gifts, and rare finds you will not see in an ordinary shop.
We also offer professional rock cutting and polishing, custom lapidary services, rock identification, jewelry cleaning, hands-on classes, and opportunities to learn how raw stone becomes something extraordinary.
Whether you are a lifelong collector, an adventurous rockhound, or simply drawn to beautiful things shaped by the earth, there is always something new to discover at The Hidden Gem.
Come curious. Leave with a treasure. 🪨✨
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Reviews
, Highest rated
- Erin Avakian··from Google
Truly a special spot. The owner clearly loves what he does and it shows. Great selection and at all price points. Came in for a few small gifts, will be back soon!
- Kallie Browne··from Google
The Hidden Gem truly lives up to its name! We stopped in to purchase a rock for my son as a little reward for doing well on his tests at school, and what could have been a simple purchase turned into such a special experience. The owner was incredibly kind and went above and beyond by taking the time to connect with my son. It’s rare to come across people who make such a genuine, positive impact through a simple interaction. We left with more than just a rock—we left with a meaningful memory, a true ‘pay it forward’ type of experience and some great words of wisdom. I’m so grateful to have businesses like this in our community. Highly recommend stopping in and supporting this family!
- Randy Helsel··from Google
This place is truly incredible. The vibes are right and the selection is gorgeous! Incredibly knowledgeable and I even learned more about the piece that I brought in. Will definitely be coming back again!
- Elyssa Ernst··from Google
Worth the trip!! Stunning new store - beautifully displayed rock and mineral specimens, air plants, incense, small gifts, something for everyone! The owner is incredibly knowledgeable and cut/polished obsidian stones I found, a notoriously temperamental stone in lapidary work. He quoted me a very fair flat price, then ended up spending many extra hours on them without charge. Now I can't wait to find more rocks to have cut open! Will definitely be back to shop and talk rocks.
- Sharlie Barclay··from Google
The Hidden Gem is great :) I had a rock that I inherited from my dad that had never been cut. Shane was very knowledgeable and advised me on the possibilities it could be should I decide to cut it. Initially he advised against cutting but after discussing further we decided to go ahead and cut it. It was a solid rock and needed a stronger blade that ended up taking about 1.5 hrs to get all the way through.
The results were amazing :) As most probably do, we had been hoping for a geode or crystals, however what we got was so much better! We ended up with a large thunder egg that revealed rhyolite, chalcedony and agate. Shane was able to give us a probable location as to where my dad had actually gotten the thunder egg based on the internal contents as well as give us an age estimate (21-25 million years!).
He provided me a great write up with all the information which I was able to share with the rest of my family who were excited to hear all about it. I am 100% happy that we decided to go ahead with cutting the rock and I am also 100% happy that The Hidden Gem was the place we went to have it cut :) - Kallen Smith··from Google
The Hidden Gem stands out because the owner sources only authentic crystals with complete transparency and integrity. He puts real effort into knowing the exact origin of every piece and turns away anything that doesn't meet his standards. That approach works together with the natural lattice structures of the crystals to curate a steady, tangible, and harmonious feeling in the space. On my first visit i picked one stone i kept thinking about, held it in my hand for a while and it felt right. My mom also had the same experience when she visited. The atmosphere there reflects the actual properties of these stones instead of hype. I left with real gratitude for finding a place that holds such standards.. If one stone has been on your mind, go to the hidden gem and see which one feels like it belongs to you.
Opening hours
- Sunday
- Closed
- Monday
- 9 AM - 2 PM
- Tuesday
- 9 AM - 2 PM
- Wednesday
- 9 AM - 2 PM
- Thursday
- 9 AM - 2 PM
- Friday
- 9 AM - 2 PM
- Saturday
- 9 AM - 2 PM