Gem Valley Mining and Gem/Rock-shop is a full-service lapidary business. Gem-Valley LLC is a public gem-mining/facility where you can find treasures you can keep. We are located near the historical "Ore Knob Mine" Hours: Friday, Saturday, Sunday (and SOME Holiday Mondays) for Gem-Mining at the FLUMES from 10:00AM to 2:00PM. (Sorry but NO new Gem-Miners after 1:00PM) Store: hours: 5/26-10/8 Thursdays and Mondays from 11:00AM to 1:00 PM, and Friday through Sundays from 3:00PM to 4:00PM