Three Rivers Gem & Mineral Society's 2026 three-day show theme is "Gems Rock the Fort." Attendees of all ages will enjoy demonstrations, variety of vendors, kids' games, a fluorescent room, a gem sluice, Silent Auction and more October 16-18 at the Allen County Fairgrounds inside the building east of Home & Family Arts building: 2726 Carroll Road, Fort Wayne IN.
- Show hours: Friday & Saturday 10am-6pm; Sunday 10am-5pm
- Admission: $5 for those 12yrs and older; Scouts in uniform are free (18 and under)
- Activities: Find unique jewelry, buy loose gems, get stones set, watch lapidary demonstrations, add fossils or minerals to your own collection, find materials for your own creations, buy grab bags, bring minerals to be identified and a chance to win door prizes.
Fort Wayne-based Three Rivers Gem & Mineral Society is an educational, recreational non-profit club dedicated to the study of geology, mineralogy, lapidary and related earth sciences. Its purpose is to foster and promote fellowship, meetings, programs, exhibits or any other form of acquiring knowledge or skill in these fields. This organization meets monthly, sponsors regular field trips and hosts an annual show.