Miadora Sterling Silver Created White and Blue Sapphire Heart Halo Crossover Ring (9). This lovely Miadora sterling silver heart halo crossover ring features a vibrant blue heart-cut created blue sapphire surrounded by numerous small white round-cut created sapphires in a stunning heart halo design. With exquisite luster and bold color, this ring makes a perfect September Birthstone Gift either for yourself or someone special in your life. Gemstone colors: Blue Gemstone shapes: Heart One prong-set heart-cut created blue sapphire measures 7 mm wide x 7 mm long Gemstone weight: 1 7/8 carats 28 prong-set round-cut created white sapphire each measure 1.5 mm Gemstone weight: 1/2 carat 16 prong-set round-cut created white sapphire each measure 1.5 mm Gemstone weight: 1/3 carat Total gemstone weight: 2 4/5 carats Metal: Sterling silver Finish: High polish Metal weight: 3.21 grams Ring setting dimensions: 21.4 mm wide x 10.7 mm long x 5.8 mm high Band dimensions: 2.3 mm wide All carat weights and measurements are approximate and may vary slightly from the listed dimensions. Treatment code CR (created white and blue sapphire). See Treatment Guide for further information. Click here for ring sizing guide This ring cannot be resized. All measurements are approximate and may vary slightly from the listed dimensions. Click here for help finding your ring size. T.W. (total weight) is approximate. The weight may vary up to two-tenths of a carat.