With baguette-cut diamonds, extravagant emeralds and rubies, and angular shapes, Art Deco engagement rings are arguably the most well-known among vintage and antique designs. Heavily influenced by ...

The massive diamond ... s Online sale are 200 gemstones, including pieces from Cartier, Tiffany & Co. and Van Cleef & Arpels. Among them are a 8.2-carat blue sapphire ring, set to go for anywhere ...

The auction house’s head of jewelry for the Americas, Quig Bruning, said in a statement ahead of the sale that the stone was “joining the ranks of the most important diamonds in history.” ...