Nevada County Gem & Mineral Society will hold its 54th annual show, Earth’s Treasures, Oct. 2 and 3 at the Nevada County Fairgrounds. Show hours are Saturday from 10 a.m. to 5 p.m. and Sunday from 10 a.m. to 4 p.m. Parking is free. Admission is $3 for adults, but free for children 12 and under, and military with ID.

This year’s featured display is museum-quality petrified wood, provided by Ed Rigel, owner of Applegate Lapidary.

Earth’s Treasures: Gem & Mineral Society’s 54th annual show set for Oct. 2 and 3

Brazilian raw clear quartz crystal cluster.