Discover Northern California's Hidden Gem
Crystals, minerals, lapidary services, rock identification, jewelry cleaning, metal detecting recovery, and buy • sell • trade.
What We Do
Crystals & Minerals
Shop collector minerals, crystals, display pieces, rough rock, gifts, and natural treasures.
Lapidary Services
Rock cutting, slabbing, polishing, cabochons, and display-face work for select stones.
Rock Identification
Bring your mystery rock, mineral, crystal, or field find and we’ll help guide you.
Buy • Sell • Trade
We review collections, estate minerals, bulk lots, slabs, jewelry, and rockhound finds.
A Real Local Treasure Room
The Hidden Gem Rock Shop is built for collectors, families, makers, metaphysical shoppers, lapidary artists, and curious first-timers.
Come in for a gift, a specimen, a rock ID, a stone cut, a cleaning, or just to see what the earth has been quietly making beneath our feet.
Not a generic crystal shop. Not a warehouse. A family-owned shop where rocks still feel like discovery.
Explore Our Services
Metal Detecting Recovery
Lost ring, keys, jewelry, tools, or metal item? We help recover what matters.
Request SearchWholesale / Trade
Wholesale minerals, buy/sell/trade, consignment, and collection reviews.
Start HerePopular Reasons People Visit
“What Did I Find?”
Rock and mineral identification help for local finds.
Unique Gifts
Crystals, minerals, jewelry, display pieces, and conversation starters.
Stone Cutting
Open geodes, reveal patterns, polish faces, and prepare lapidary material.
Sell A Collection
Have minerals, crystals, slabs, or estate pieces? Send photos first.
Rock Shop Near Roseville, Rocklin, Auburn & Sacramento
The Hidden Gem Rock Shop serves Penryn, Loomis, Roseville, Rocklin, Auburn, Lincoln, Granite Bay, Newcastle, Sacramento, and surrounding Placer County communities.
Looking for a crystal shop, mineral shop, lapidary service, rock identification, jewelry cleaning, metal detecting recovery, or buy/sell/trade mineral shop near you? You found the little cave door.
Frequently Asked Questions
Where is The Hidden Gem Rock Shop located?
We are located at 2210 Taylor Road, Suite A, Penryn, CA 95663.
Do you identify rocks?
Yes. Bring the actual piece if possible, plus photos and where it was found.
Do you cut and polish rocks?
Yes. We offer select lapidary services including rock cutting, slabbing, polishing, and cabochon work.
Do you buy mineral collections?
Yes. Call or email photos first so we can review the lot before you bring it in.
Do I need to call before visiting?
Yes, calling first is best. Hours can be flexible and we may be cutting, collecting, or working off-site.
Visit The Hidden Gem Rock Shop
2210 Taylor Road, Suite A
Penryn, CA 95663
Call / Text: 916-250-7281
Email: hello@thehiddengemloomis.com
General Hours: Monday – Saturday • 10 AM – 6 PM
Closed Sunday
Please call before stopping by.