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Welcome to Our Society!

We Are Open

Spheres from the flourecent room during the 2008 Mineral and Gem Society of Castro Valley Rock Show held in Centenial Hall, Hayward, CA.

Our club encourages individuals of all ages to explore all of the wonderful things that the lapidary hobby has to offer:

Learn about our club and how to become a member.
Take an online tour of our workshop or visit in person.
Learn how to cut and polish lapidary grade rocks.
Monthly emailed newsletter, The Petrograph, has Updates, Articles & Information.
Attend and be a part of one of the BEST Gem and Mineral shows in Northern California.
Visit our gallery to see what you can learn to make.
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Our General Meetings

Everyone is encouraged to attend our general meetings
on the third Saturday of every month (except July & August)
starting at 3:00 pm held at the

Church of Christ
22307 Montgomery Street, Hayward, CA

Enjoy educational and entertaining presentations by our guest speakers.
Take advantage of our silent auction. A good way for members to get affordable lapidary material. (donated to our club)
Meet other members and network with those who specialize in different lapidary techniques.


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