This ring is a size 10 (USA). Markings: Sterling, NF (Tested & guaranteed to be Sterling Silver) This ring weighs 15.9 Grams The Stone/Design is Blue Turquoise Leaf Natural, industry standard treatment if any The Stone/Design measures 16.3 x 12 mm The Ring face measures 29 x 25.2 mm The condition of this ring is Estate, Very good, moderate patina, large crack across stone (still secure in setting) This vintage item is circa 1980 Stock# R5353Ali Thank you for viewing my item! Favorite the store to get updates when items go on sale!