Clustered chic. Multicolored cultured freshwater pearls (7mm) and white topaz (1/3 ct. t.w.) come together for a stunning effect in this pair of sterling silver earrings. Approximate diameter: 5/8 inch. Almost all gemstones and blue and black diamonds have been treated to enhance their beauty and require special care. All gemstone carat weights (ct. t.w.), if mentioned, are approximate; variance may be .05 carat.