MGMC LogoThe Mariposa Gem & Mineral Club (MGMC) is a non-profit organization founded in 1990. We are members of the California Federation of Mineralogical Societies, Inc. (CFMS). Our mission is to promote earth science and lapidary craft studies through educational articles, workshops, classes, field trips, and shows.  To contact us, Monday through Saturday, 10:00 A.M. to 5:00 P.M., please call or visit our "Store" located in downtown Mariposa at 4994 "A" 7th Street.  Telephone  209-966-4367.

Earth Science

Lapidary Crafts

Cutting, faceting, forming, finishing, fitting, mounting, and tumbling, stones, minerals, gemstones, materials from the sea.

Gem, mineral clubs, federations, mining associations, mineral museums.
 AnnouncementJuly-August 2008 Mariposa suffered much!  The Telegraph Fire destroyed 30 homes and 100 out buildings.  It burned almost fifty (50) square miles due to the rugged terrain.  Fire Fighters are commended for their enormous outpouring of strength and exceptional endurance.  We cannot thank you enough!  

A Telegraph Fire Victim Relief Fund has been established and is being administered by the Mariposa Chamber of Commerce and the Mariposa Community Foundation.  Tax deductible donations can be made as follows:
Telegraph Fire Victim Relief Fund
Yosemite Bank
P.O. Box 1267
Mariposa, CA 95338
Account # 307005660