One of the largest jewelry sales in history opens next month in Switzerland, with 700 glittering pieces expected to fetch more than $150 million, including the world’s most expensive ruby ring valued ...

A Cartier Art Deco brooch and a JAR necklace are among the pieces from Mica Ertegun’s estate to be sold at Christie’s next month. By Tanya Dukes Mica Ertegun, the Romanian-born philanthropist turned ...

The legendary “pigeon’s blood” ruby is poised to make a giant splash at Christie’s this fall. Two pieces of high jewelry featuring the exceedingly rare red gemstone will go under the gavel at the Hong ...

A ruby ring and a diamond necklace fetched less than their pre-sale estimates at a Christie’s auction Wednesday of a vast jewelry collection of a late Austrian heiress that was bought with riches from ...