This ring is a size 5 (USA) Markings: Sterling (Tested & guaranteed to be Sterling Silver) This ring weighs 4.3 Grams The Stone/Design is Blue Turquoise Navette - Natural, industry standard treatment if any The Stone/Design measures 17.4 x 5.6 mm The Ring face measures 23.8 x 12.3 mm The condition of this ring is Estate, Great, light patina This vintage item is circa 1980 Thank you for viewing my item! Favorite the store to get updates when items go on sale!