Ruby Rope Design Stackable Ring in 9ct gold plated sterling silver. Size: 19.1 mm (0.75 in). Material: Gold Plated Sterling Silver. Total metal weight: 1.4 gr. Round cut ruby (3 x 3 mm) = 0.15 ct total. Colour: Red. Stone cut: Round Cut. Anniversary: 15th Anniversary, 40th Anniversary. Birthstone: July.