A 46.51-ct. oval-cut diamond, flanked on either side by a pear-shaped diamond, weighing approximately 1 and 1.01 cts., (pictured above) fetched an impressive $4.2 million at Christie’s Important ...

A 3.09-carat rectangular-cut fancy intense blue diamond sold for more than $5.3 million, setting a world record price per carat for an intense blue diamond. The gem, which was set on a platinum ...

The necklace featured a pear-shaped, 8.01-carat fancy vivid blue internally flawless diamond with a 1.06-carat circular-cut fancy intense pink diamond and a circular diamond “spacer” above it.

In 1988 a rare Ashoka-cut diamond came up for auction at Sotheby’s, and Saul Goldberg, now the company’s president, was sent to buy it. “I’ll never forget holding the diamond in my hand.