Free for Members
Wander among thousands of stunning specimens showcasing the beauty and diversity of Earth’s building blocks in one of the world’s most valuable collections of gems and minerals. Investigate how geologists find and classify rocks and minerals and marvel at over 300 pounds of gold—including the “Mojave Nugget,” the largest known nugget of California gold.
Find your favorite mineral.
Marvel at exquisitely colored crystals.
You'll see real California gold—lots of it!
Something for everyone to discover.
See rare gems.
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While you're digging around, you'll:
- Touch a meteorite billions of years old and a tree that has turned into stone.
- Gaze upon rare and exquisite diamonds, emeralds, and rubies.
- Learn why California is “The Golden State.”