Some of the family’s most stunning jewelry will be auctioned off by Christie’s in December.

One is a double-signed Ref. 6262 bearing the Tiffany & Co. name; the other is a Ref. 6239 with a distinctive pulsations dial.

The stunner leads Christie’s Jewels Online sale, which is taking place from now until October 23.

The Mellon Blue fits right into the colored-gem trend.

In episode two of Robb Report’s watch vodcast, Paige Reddinger and Justin Fenner welcome Christie’s head of watches for Europe and the Americas on the show to discuss what’s hot on the block.

The dazzling gem also has ties to Marie Antoinette.

It is the largest and most expensive single-owner wine collection ever sold in the U.S., according to Christie’s.

The hand-stitched relic occupied pride of place on HMS “Spartiate” during the 19th-century naval clash.

Christie’s and Sotheby’s go head-to-head with single-owner sales from celebrated collectors.