The gems are second only to colored diamonds in value, but their troubled provenance has made them an anathema to many. By Nazanin Lankarani Myanmar, formerly known as Burma, has long been a producer ...

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). It is ...