Diamonds, rare colored gems and signed jewels from important private collections fueled Sotheby’s High Jewelry auction in New ...

Sotheby's sale of 110 lots includes important pieces from the Vanderbilt and Wade families, and a private collection in which ...

The top lot at Bonhams’s upcoming London Jewels sale proves that two diamonds are better than one ... A Graff diamond pendant necklace centers a 9.7-carat rectangular brilliant-cut stone ...