Sotheby’s will offer a yellow diamond weighing more than 300 carats at its upcoming New York auction,[…]
Sotheby’s will offer two diamonds weighing more than 100 carats at its upcoming jewelry sale, with one[…]
The Key 10138, the rare pear-shaped diamond, that was auctioned at Sotheby’s on Friday, has been sold[…]

A sapphire and diamond bracelet fetched more than double its high estimate at Sotheby’s Geneva auction, selling[…]