Ruby & White Topaz Halo Ring in solid 9ct white gold. Material: White Gold. Total metal weight: 2.4 gr. Round cut ruby (6.5 x 6.5 mm) = 1.25 ct total. Round cut white topaz (1 x 1 mm) = 0.34 ct total. Colour: Red. Stone cut: Round Cut. Occasion: Wedding, Mother's Day. Anniversary: 15th Anniversary, 40th Anniversary. Birthstone: July.