9x7mm Greenstone Ring with Tri-rib setting
Nice wider band on this Michigan Greenstone sterling silver ring in Tri-rib setting.
This is size 6 1/2.
-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 found on Isle Royale and on some of the mine waste piles of the Copper Country, although it is a rare mineral.