California Federation of Mineralogical Societies presents info on more than 150 clubs devoted to minerals, gems, and lapidary crafts.

Club devoted to rock collecting is based in Cologne, New Jersey and offers tips on collecting in New England, Colorado and Maryland.

Features an overview of the membership requirements, activities, and objectives of this rock and mineral enthusiasts' club in San Diego, California.

Offers background on this rock enthusiasts' club in Nashville, Tennessee. Includes information about meetings, membership, and events.