This ring is a size 10 (USA). Markings: Not marked (Tested & guaranteed to be Sterling Silver) This ring weighs 6.9 Grams The Stone/Design is Turquoise – Natural, industry-standard treatment if any The Stone/Design measures 19.1 x 14.1 mm The Ring face measures 27.9 x 22.3 mm The condition of this ring is Estate, Great, some patina This vintage item is circa 1970 Thank you for viewing my item! Favorite the store to get updates when items go on sale!