The Maine Mineralogical and Geological Society will present its 27th annual Gem and Mineral Show at the University of Southern Maine’s Sullivan Gymnasium, 96 Falmouth St. in Portland, on Saturday, April 17 from 10 a.m. to 5 p.m. and Sunday, April 18 from 10 a.m. to 4 p.m.

Each year MMGS invites retail dealers that present diverse jewelry, cut gems, rough stones, a multitude of fossils, and mineral specimens of every imaginable kind.

One of the society’s primary purposes is to interest the community, especially children, in minerals and geology. To do this, the show offers children a mini-mine, a mineral wheel of fortune, a hands-on mineral exhibit and coloring area, as well as a silent auction that moves hundreds of specimens intriguing to both adults and kids. The show also features a fluorescent mineral display, a gold panning exhibit, and other attractions to introduce people to the world of minerals. All attending qualify for hourly door prizes and the grand prize drawing on Sunday at 3:30 p.m.

Admission is $4 for adults, $3 for seniors and teens under 18, and free for children 12 and younger. For directions or more information, visit mainemineralclub.org or call Jerry Poirier at 571-4522.