18, 10-6, 19, 11-5: Gem, Mineral, and Lapidary Society of Montgemery County Show at Montgomery county Fairgrounds, Building 6, 16 Chestnut St., Gaithersburg, MD
25, 10-5. 26, 10-4: Franklin County Rock and Mineral Club 39th Annual Gem and Mineral show at Hamilton Heights Elementary School, 1589 Johnson Road, Chambersburg, PA
31, April 1: Micromineralogists of the capital Area 44th Annual Micromounters Conference at Springhill Suites by Marriott, 6065 Richmond Highway, Alexandria, Virginia 22303: Contact Contact firstname.lastname@example.org
1, 10-6, 2, 10-4: 28th ANNUAL NORTH JERSEY GEM, MINERAL & FOSSIL SHOW at Midland Park High School, 250 Prospect St., Midland Park, N.J.
14-17: Rochester Mineralogical Symposium at at the Radisson Hotel Rochester Riverside, Rochester, NY
7-9; Fri., noon-9, Sat., 10-6, Sun., 10-6, NY/NJ Mineral, Fossil, Gem, and Jewelry Show, NJ Expo Center, 97 Sunfield Ave., Edison, NJ