This ring is a size 8 1/4 (USA) Markings: AZ3AP (Tested & guaranteed to be Sterling Silver) This ring weighs 22.5 Grams The Stone/Design is Blue Lone Mountain, Spiderweb Turquoise - Natural, industry-standard treatment if any The Stone/Design measures 17.6 x 15 mm The condition of this ring is Estate, Good, light patina, crack in the middle of the stone This vintage item is circa 1980 Stock# R4553Aly Thank you for viewing my item! Favorite the store to get updates when items go on sale!