Greenstone 9 x 7mm Pendant 5418

9 x 7 mm oval Greenstone pendant in a sterling silver 4 prong setting. An 18in. Sterling Silver chain with a spring ring clasp is included. -Chlorastrolite (Greenstone) is the "official state gem" of Michigan. It is a variety of the mineral pumpellyite and is found chiefly as a small, green, rounded beach pebble, showing a turtleback pattern. Greenstones can still be seen on Isle Royale and found on some of the mine waste piles of the Copper Country, although it is a rare mineral.