Shimmering sophistication. Add a bright burst of color to your look with this oval- and round-cut citrine (3-1/6 ct. t.w.) and round-cut white topaz (3/4 ct. t.w.) ring. Set in sterling silver. Size 7. 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.