A diamond is probably the oldest thing you’ll ever own—maybe as old as 3 billion years and believed to be the hardest thing nature has produced. If you’re planning to buy one, there are several things ...

New York Post may be compensated and/or receive an affiliate commission if you click or buy through our links. Featured pricing is subject to change. Diamonds are a girl’s best friend, but if you were ...

Diamonds, rare colored gems and signed jewels from important private collections fueled Sotheby’s High Jewelry auction in New York on Friday. The top lot of the sale, as expected based on pre-sale ...