Look on the bright side. This beautiful ring features a three-stone design with an emerald-cut ruby (1-5/8 ct. t.w.) and round-cut diamond side stones (1/5 ct. t.w.). Set in 14k gold. 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. Ring Sizer.