Contra Costa Mineral & Gem Show

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5298 Clayton Rd
Concord, CA 94521
+1 (925) 289-0454
http://www.ccmgsclub.com

The Contra Costa Mineral & Gem Society is dedicated to promoting the appreciation of minerals, gems, and the earth sciences through various educational programs and community activities. With a commitment to fostering interest in geology and rock collecting, the society hosts an annual show that showcases vendors, demonstrations, and opportunities for hands-on learning.

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5.01 reviews
Rich D.
11/20/2025

My grandson and I loved it! A very wide range of products and origins all over the world. I will go again next year.

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United States›California›Concord›Contra Costa Mineral & Gem Show

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