The Hidden Gem • Loomis, California

Rocks, Minerals & Fossils with a Story.

A calm, family-run rock shop where curiosity is welcome and quality is curated. From gift-ready crystals to lapidary material and petrified wood, we help you find pieces that feel like they were meant for you.

Curated Specimens Jasper Specialty Chrysocolla Finds Petrified Wood Lapidary Material Buy • Sell • Trade

Why People Come Back

Curated, Not Random

We don’t do endless bins of “maybe.” We choose pieces with integrity, character, and value, whether it’s a small gift stone or a serious collector specimen.

If you want help choosing, we’ll guide you without pressure.

Education-First

New to rocks? Bring questions. Experienced? Bring stories. We love helping people understand what they’re holding, how it formed, and how to care for it.

Community & Education

Family Roots & Stewardship

Our approach is shaped by the principle of Mālama ʻĀina, caring for the land and the resources it provides. We believe good stones deserve honest sourcing and respectful handling.

Our Family Roots

What You’ll Find in the Shop

Crystals & Minerals

Gift-ready pieces, display specimens, and collectible minerals selected for quality, natural formation, and visual impact.

  • Small stones & palm pieces
  • Statement specimens
  • Collector-grade finds

Jasper

One of our specialties. Jasper is grounding, durable, and endlessly varied. Each piece tells a geological story through color, pattern, and texture.

  • Orbicular, picture, and patterned jaspers
  • Rough, slabs, and polished pieces
  • Lapidary and display-grade material

Jasper is best experienced in person. No two pieces are ever the same.

Chrysocolla

Known for its deep blues and greens, chrysocolla brings together copper-rich color and striking natural movement. A favorite for collectors and artists alike.

  • Chrysocolla in quartz and matrix
  • Cab and lapidary-ready material
  • Unique, one-off specimens

Availability changes often. We recommend visiting to see current pieces.

Petrified Wood & Fossils

A local favorite. Petrified wood and fossil material with real texture, age, and presence.

  • Display pieces
  • Rough & lapidary-ready material
  • One-of-a-kind finds

Lapidary Material

Rough, slabs, and project stone for cutters, makers, and serious hobbyists. Selected with practicality and finish in mind.

  • Rough lots
  • Slabs and cab material
  • Project guidance available

New Finds & Rotating Pieces

Inventory changes regularly based on sourcing, field work, and trade. There’s always something different on the shelves.

  • Fresh arrivals
  • Limited quantities
  • In-shop exclusives

Buy • Sell • Trade • Wholesale

Have stones to sell or a collection you’re ready to move? Want to trade for something better? Need bulk material for a project or retail? We keep it clear, fair, and curated.

“Bring what you have. We’ll tell you the truth about it, and we’ll treat it with respect.”

Care, Cleaning & Guidance

Rock Cleaning & Care Products

Safe cleaning methods for common materials, plus product guidance for display pieces, fresh finds, and stubborn buildup.

Read the Care Guide

Bring Your Stone In

Found something and want help? Bring it by. We can offer visual identification guidance and care recommendations.

Plan Your Visit

Community & Education

We share knowledge, ethics, and stewardship. Curiosity is welcome here, and learning is part of the experience.

Explore the Page

© The Hidden Gem • Loomis, California