Wow-factor: Off the charts. This natural black onyx ring proves it doesn't need to dazzle to be dazzling. Combined with white topaz accents it exudes sophistication. .42 carats T.W. 18k gold-plated sterling silver. Sizes 6-10. Main Stone: 1 Emerald Octagon Cut Genuine Black Onyx, 18 mm x 13 mm Accent Stone: 14 Genuine Topaz .42 cttw 18k Gold-Plated Sterling Silver; Contains 5.60 grams of Sterling Silver Measures: 18 mm wide x 18 mm long x 10 mm high; Shank Width: 3.0 mm wide Includes gift box and drawstring pouch 18k Gold-Plated Sterling Silver Contains 5.60 grams of Sterling Silver Shank Width: 3.0 mm wide Dimensions: 18 mm wide x 18 mm long x 10 mm high Includes gift box and drawstring pouch 15 Polished finish Prong setting Warranty available, Fullreplacement warranty, 30 Days Thailand Imported Product Specifications 0.42 Material & Care Metal, Sterling silver Clean with a soft cloth.