This ring is a size 9 1/2 (USA); It may be resized. Mex (Tested & guaranteed to be Sterling Silver) This ring weighs 4.6 Grams The Stone/Design is Blue Turquoise Cluster Zuni Natural, industry standard treatment if any The Stone/Design measures 4.3 x 2.3 mm The condition of this ring is Estate, Very good, moderate patina This vintage item is circa 1970 Thank you for viewing my item! Favorite the store to get updates when items go on sale!