A rare 10.05-carat ruby will be the lead item at Christie’s Hong Kong Magnificent Jewels sale on November 29. Known as the “Ratnaraj” (“King of Precious Stones” in Sanskrit), the auction house says it ...

A 25.59 carat "pigeon blood" ruby sold for a world record $30.33 million at auction in Geneva Tuesday while a rare pink diamond believed to have once belonged to Napoleon's niece fetched $15.9 million ...

For centuries, the Mogok valley in Myanmar (formerly Burma) was the world's foremost source for rubies. Hundreds of years ago, likely in China, the term 'pigeon's blood' was coined to describe the ...