Gem bag:$5.99; Arrowhead bag: $5.99; Large Gem bag: $7.99; Fossil or Emerald bag: $9.99; Family Treasure Lode: $24.99 Generally they are common clear crystals. Monday through Saturday 10:00AM-3:00PMMailing Address: P.O. Diamond Caverns: Only went for the Gem Mining...disappointing activity - See 412 traveler reviews, 346 candid photos, and great deals for Park City, KY, at Tripadvisor. canceled. Along with panning for gemstones, enjoy the new Dino Dig where you can find ancient shark teeth fossils and special prizes.