SALE! 12,000→10,000 Turquoise Ring Size 11 Men's & Ladies' Unisex As it is a double shank ring, the style is from the 1970s-1980s. [Weight] 9.9g [Stone Surface Size] Approx. 2.5 x 2 cm [Hallmarks] Jackson (artist's name) and "Sterling" [Condition] The stone and silver surface have almost no scratches, but there are polishing marks on the back. *Purchased in California about 20 years ago at a vintage jewelry shop during my travels. Thank you for looking.