Attractive emerald and diamond ring. Photo Sotheby's Of toi et moi design, set with a pear-shaped emerald weighing 4.42 carats and a similarly shaped diamond weighing 5.33 carats, the shoulders highlighted with baguette diamonds, size 521/2. Estimation...

Magnificent and very rare fancy vivid blue and fancy intense blue diamond ring. Photo Sotheby's. Of toi et moi design, set with two pear-shaped diamonds, one fancy vivid blue weighing 3.08 carats, the other fancy intense blue weighing 2.83 carats, between...