Welcome to the Contra Costa Mineral and Gem Society!

Next meeting:
Monday, June 14, 2021

Program starts at 7:00 p.m.

Program: Geology of Mount Diablo

John Karachewski, a geologist and photographer will share his bicycling and hiking adventures at Mount Diablo State Park while describing over 200 million years of geological history. You will learn about ancient lava flows that erupted on the seafloor thousands of miles away to modern landslides as you learn how Mount Diablo became the prominent natural landmark of the East Bay.

NOTE: Meetings are currently being held on ZOOM.  If you don’t already have Zoom loaded on your computer, ipad, or phone, you can get it at www.Zoom.us  Once you have it loaded, click on  (or copy to the browser and click). It’s just that simple!
For meeting access information, please contact: Donna-at-Albrechts.com

Our general meetings are the 2nd Monday each month at Centre Concord, 5298 Clayton Rd., Concord, CA 94521. Meeting hall opens at 6:30 p.m., meeting begins promptly at 7:30 p.m.
NOTE: In person meetings and other gatherings of the Contra Costa Mineral & Gem Society are suspended for an indeterminate time because of the coronavirus pandemic. 

CCMGS is now on Facebook!

Monthly Display Competition

Members are eligible to enter these competitions and win recognition.  As long as there are two or more items entered in the area of competition, the winner is eligible to win a cash prize!
FACETERS: Create a new project and bring it in to share. We have a special display tray to show your work off at its beautiful best!
WEARABLE ART: Bring your original work, necklaces, earrings, rings, cuffs, etc. and hang them on our special display board for everyone to see, enjoy, and vote for!
CABBERS: We have three categories for you to compete in:
NOVICE: Any member who has not won the “Pro” designation in previous years.
PRO: Any member who has won the “Pro” designation in previous years.
SHAPE OF THE MONTH: Pros and Novices compete side-by-side to create the most eye-catching cabochon in the shape of the month.

The shapes are:
January: Irregular
February: Heart
March: Round
April: Oval
May: Pear (teardrop)
June: Rectangles & squares
July: Free-form
August: Triangle
September: Auction night – no competition
October: Marquis
November: Oval
December: Holiday party – no competition