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Explore Snazzy Minerals, Rock Minerals, and more!

This gold specimen (in the Museum’s Guggenheim Hall of Minerals) crystallized in veins of quartz found in the foothills of California’s Sierra Nevada. Over 150 million years ago, magma was pushed towards Earth’s surface. As the magma solidified, it drove superheated, gold-bearing water into cracks in the overlying rock, which solidified into veins of quartz and gold. Photo (c) AMNH/R. Mickens

Chrome Dravite from the very new find at Nadonjukin, Tanzania. Crystal Classics Minerals

from Etsy

Vintage Print Rocks and Minerals, Rose Quartz and Tiger's Eye