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

A pair of 10-plus-carat diamond earrings are estimated at $1.3 million to $1.8 million, while an important Fancy Vivid Yellow diamond ring weighing 27.3 carats may cross the block for $2 million.

Celebrities have been known to splurge on expensive engagement rings. Russell Wilson proposed to Ciara with a 16-carat ring worth an estimated $2 million. In 2016, billionaire James Packer ...

Similarly, a 28.2-carat emerald-cut diamond ring had a pre-auction estimate of $1.8 million on the high end; it hammered down for $1.4 million on Thursday evening. While those two diamonds didn ...