These alluring gemstone earrings are in matching designer cut rare covellite gemstones. The covellite gemstones drop 1 1/2 inches from sterling silver ear wires. Covellite is a mysterious dark blue specimen flecked with silver pyrite. Covellite is a rare stone mined in the western mountains of Montana near Butte but only in small deposits have been found. A matching pair of covellite gemstones are even rarer making these covellite earring a rare find.