Blue Topaz Ring handcrafted in solid sterling silver. Single 1.15 ct genuine topaz. Round cut. Available from sizes H to Z including half sizes. Size: 7.6 mm (0.3 in). Material: Sterling Silver. Total metal weight: 3.0 gr. 1 round cut blue topaz (7 x 7 mm) = 1.15 ct. Colour: Blue. Stone cut: Round Cut. Anniversary: 4th Anniversary. Birthstone: November.