The top lot is the Red Dragon, a 6.43-carat Burmese ruby and diamond ring estimated at $1 million to $1.5 million. The exceptional purplish-red color is natural (many rubies are heat-treated).

A pair of Burmese pigeon’s blood ruby and diamond earrings is estimated at $570,000-$770,000, and a 4.61-carat Burmese ruby ring by Cartier is estimated at between $300,000 and $380,000.

GENEVA (AP) — A rare Burmese ruby in a platinum ring with diamonds sold for $30.3 million at auction, setting a world auction record for any ruby and for any stone by Cartier, according to So… ...

A Burmese ruby ring. one of the highlights of The Jewels of the World collection. The centre stone weighs 6.44cts.