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About The San Francisco Gem and Mineral Society

Founded in 1935, The San Francisco Gem & Mineral Society is a 501(c)3 non-profit educational organization dedicated to the study and enjoyment of it's members and the community at large with respect to geology, mineralogy, gems and gemology, rocks and minerals, and lapidary and associated creative arts as related to the earth sciences per Article 1, Section 3 of our By Laws:

PURPOSE: The objective and purpose of the Corporation is to disseminate knowledge of mineralogy, the earth sciences, and the lapidary arts, and to encourage study in these subjects through means of: the presentation of public exhibitions; field trips for exploration, study and collecting of specimens; providing classes in mineralogy, the earth sciences, and the lapidary arts; providing a gathering place and workshop for those interested in the study of mineralogy, the earth sciences, and the lapidary arts; the presentation of programs pertaining to the fields of mineralogy, the earth sciences, and the lapidary arts; and all other means which are appropriate to the accomplishment of the primary objects set forth above.

This Corporation is non-political and non-sectarian.

To this end, we maintain well equipped facilities which include a substantial library with specific focus on geology, mineralogy, gemology, related earth science studies, lapidary arts and jewelry making and design, and metal-smithing. We also maintain a publicly accessible curated museum of mineral specimens, fossils and semi precious gems. We also provide informal instruction in lapidary art, jewelry-making, metal-smithing and related crafts seven days per week. We have a stable of member-instructors, covering almost every facet of our interest to help, one-on-one, with anything our members need. We also periodically schedule classes dedicated to specific areas of interest to members.

We hold monthly meetings at the Society's' own clubhouse in San Francisco, featuring speakers across the spectrum at every level, from dedicated hobbyists to world-renowned experts. The general public is always invited to attend free of charge.

Each year, in August, We hold our annual gem and mineral show to showcase just a tiny amount of the many fantastic skills developed and materials collected or crafted by club members and the local community over the years. There's always new and exciting things to see - and lots of vendors offering for sale, everything from rocks to gems, books to jewelry-making tools, crystals to grit. We also have several annual club functions throughout the year with great food, gem and mineral auctions, and great camaraderie. Scroll down the page for a little more history of the club.

To further promote and perpetuate our interest in all things gem & mineral, The San Francisco Gem and Mineral Society maintains membership with other organizations that have similar goals, and from which affiliation all parties gain mutual benefit. These include:




The American Federation of Mineralogical Societies (AFMS):

The purpose of the AFMS is to promote popular interest and education in the various Earth Sciences, and in particular the subjects of geology, mineralogy, paleontology, lapidary and jewelry arts and other related subjects, and to sponsor and provide means of coordinating the work and efforts of all persons and groups interested therein; to sponsor and encourage the formation and international development of Societies and Regional Federations and by and through such means to strive toward greater international good will and fellowship.




The California Federation of Mineralogical Societies (CFMS):

The objective and purpose of the CFMS is to disseminate knowledge of mineralogy, the earth sciences and the lapidary and jewelry arts and to encourage study of these subjects through association of gem and mineral societies, presentation of public exhibitions and programs, field trips for exploration, study and collecting of specimens, encouragement of interest in mineralogy, paleontology, lapidary, jewelry arts and related crafts, and the establishment of museum quality exhibits of gems and minerals and other earth science related specimens and items.

North Bay Field Trips (NBFT):

North Bay Field Trips is an association of gem and mineral clubs in and around the San Francisco Bay Area, with the goal of sharing field trips. SFGMS takes part by hosting a trip to the club's "Spider Mine" rhodonite mine each year.


A Little History...

The San Francisco Gem & Mineral Society was organized in 1935 by a group of 16 persons interested in the educational study of minerals. They met in a private home to form the Northern California Mineral Society. The following year, in 1936, the Society was one of eight charter societies that planned the formation of the statewide organization that became the The California Federation of Mineralogical Societies, Inc.

In 1954 the organization changed it's name from Northern California Mineral Society to The San Francisco Gem & Mineral Society, because of the formation of other societies in Northern California, who also were involved with this rapidly growing hobby. The SFGMS was formed as an educational non-profit society, organized to create, develop and encourage a general interest and appreciation of the earth sciences and the lapidary arts and to provide a gathering place and workshop for those who were interested.

In 1957, increasing membership made possible the purchase of our building at 4134 Judah Street, and by 1963 the mortgage was paid in full. With a larger area, there were more and better facilities to conduct classes in the workshop. Then, as now, mineral collecting was encouraged, and all lapidary arts were taught, with outstanding results in carving, faceting, intarsia, jewelry, lapidary, and silver. Special events - social, educational and fund-raising, as well as Board meetings and committee meetings are still held here.

San Francisco hosted the California Federation of Mineralogical Societies' Convention and Show in 1938, 1955, and 1976. The jade clock, a SFGMS project, was first exhibited at the Federation Show on June 16, 1959 at San Mateo. A jade train was the club project for the "Spirit of '76" show at the Cow Palace in 1976.

For information about membership in the San Francisco Gem & Mineral Society, click here.

The San Francisco Gem & Mineral Society, Inc.

4134 Judah Street

San Francisco, CA 94122

415-564-4230

Guests and visitors are welcome at all meetings which are usually held
on the first Friday of each month, 8 pm at the clubhouse.

Click here for a map to the clubhouse

Please call for more information.