The September Important Jewelry sale expands on an already impressive 2016 with a large array of fine diamonds and colored stones, signed jewels, important antique works and modernist style jewelry. Highlighting the sale are signed items by Tiffany &...

A diamond and sapphire "zip" necklace. by Van Cleef & Arpels. Estimate: $250,000 – 350,000. Photo: Christie's Images Ltd 2014. NEW YORK, NY.- On June 10, having already achieved US$320 million in spring jewelry auction sales across Christie’s global salerooms,...