Turquoise and diamond parure. photo courtesy Sotheby's Comprising: a necklace and a bracelet both set with diagonal rows of cabochon turquoise alternating with rows of baguette, circular- and brilliant-cut diamonds, necklace length approximately 370mm,...

Impressive Emerald and diamond ring, Van Cleef & Arpels. photo courtesy Sotheby's The octagonal emerald set within a frame of brilliant-cut diamonds, mounted in platinum, size 52, signed Van Cleef & Arpels and numbered, French maker's marks, pochette....