An old-time, large and impressive selenite crystal from the Crystal Cave of Kentucky. This complete-all-around water-clear, gemmy and lustrous giant is pristine. The striking, rounded, yellow termination area rests atop the colorless body. Private Crystal Cave was acquired by the National Park Service in 1961 and was incorporated into Mammoth Cave National Park. Mammoth Cave and Crystal Cave were found to be connected in 1972. This piece was collected prior to the purchase by the Park Service. Ex. Edwin Skidmore and Robert Batic Collections. Very rare on the market from this locale in this quality. I've never seen another, in fact.