Ruby Museum Ring in solid sterling silver. Size: 22.4 x 9.7 mm (0.88 x 0.38 in). Material: Sterling Silver. Total metal weight: 6.0 gr. Oval cut ruby (8 x 6 mm) = 1.75 ct total. Colour: Red. Stone cut: Oval Cut. Occasion: Mother's Day. Anniversary: 15th Anniversary, 40th Anniversary. Birthstone: July.