Few photographs exist of Princess Margaret’s engagement ring, but it’s confirmed to have a ruby at its center flanked by ...

A 10.33-carat Burmese ruby sold for an impressive $5.5 million after a six-minute bidding war among two bidders on the phone and one in the New York saleroom at Sotheby’s Magnificent Jewels auction.

It all started with an invitation in 1982. “Women of the jewelry industry,” it read. “You are cordially invited to a Get Acquainted Cocktail Party,” and provided the address of one woman’s home. This ...