This ring is a size 12 (USA); It may be resized. Markings: Roie Jaque, Sterling (Tested & guaranteed to be Sterling Silver) This ring weighs 13.5 Grams The Stone/Design is Blue Turquoise Natural, industry-standard treatment if any The Stone/Design measures 15.2 x 11.2 mm The condition of this ring is Estate, Excellent, no stone wear, some patina This vintage item is circa 1980 Thank you for viewing my item! Favorite the store to get updates when items go on sale!