The 70th Annual Greater Detroit Gem, Mineral, & Fossil Show presents the largest collection of gems, minerals, & fossils in the Midwest. This family friendly and educational show features displays from internationally renowned universities, museums, and collections. The theme this year is “Prospector’s Showcase” and will prove to be very exciting for the beginning collector to experienced collectors. Over 60 dealers and vendors offer specimens, lapidary supplies, jewelry, collecting supplies, & printed materials. Lectures and demonstrations take place throughout the weekend.