The Contra Costa Mineral & Gem Society (CCMGS) is a non-profit organization that belongs to the California Federation of Mineralogical Societies, the American Federation of Mineralogical Societies and the North Bay Field Trips (where members can participate in field trips for rough gems, minerals, rocks, fossils and more).

Meeting times and location:
The club holds general program meetings on the 2nd Monday of each month at Centre Concord located at 5298 Clayton Road, Concord, CA. The program meeting is held from 7:30-9:00 p.m. During the program meeting there may be a speaker, demonstrator, or video presentation.

What is the club’s mission?
Our purpose is to promote popular interest and education in the earth sciences, including geology, mineralogy, paleontology, the lapidary arts, and related subjects; to sponsor and provide means of coordinating the work and efforts of persons and groups with similar interests; and by and through such means to strive toward greater community and international good will and fellowship. We also support promoting and ensuring the right of amateur hobby collecting, recreational prospecting and mining, and the use of public and private lands for educational and recreational purposes related to the earth sciences.

How does the club fulfill its mission?
The club has monthly meetings and special programs.  Members attend and participate in local and statewide events and hold a yearly public show.

Annual Show:
CCMGS hosts an annual Jewelry, Rock and Gem Show every November. There are exhibits, demonstrations, dealers, a wheel of fortune, food, door prizes, grab bags, gems, faceted stones, rocks, slabs, silent auction, fossils, jewelry, lapidary art displays, findings, tools, and family fun for everyone. For more information regarding this event, contact the Show Chair through our Contact Us page.