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The Hidden Gem Rock Shop

Penryn rock shop and lapidary studio that cuts and polishes customers' stones

Shop with a storefront

In Penryn, California.

What they sell: Mineral specimens · Rough & slabs · Fossils · Petrified wood · Classes & training

Ships nationwide.

thehiddengemloomis.com ↗

Family-run rock and mineral shop and lapidary studio in Penryn, between Loomis and Auburn. It sells mineral specimens and crystals, fossils, lapidary rough and petrified wood, teaches lapidary classes from beginner level, cuts and polishes customers' own stones and helps identify rocks. Its online store, The Hidden Bazaar, ships worldwide.

Where to use your gear near Penryn

1 gem and mineral spots on open public land with no claim on record, within 50 miles.

Nearest open public land on our fossil and meteorite map: about 109 miles away.

There are more on the map, some of them with a possible mining claim.

Prospecting and collecting rules in California →

Clubs and places nearby

Other shops and gear makers nearby

Access

Storefront at 2210 Taylor Road, Suite A, Penryn. Open Tuesday and Thursday 9 am to 5 pm and Saturday 9 am to 1 pm; other days by appointment. The shop asks you to call before visiting.