Likewise, jewelry auctions fall into two camps: colored, large ... were the kings of the auction season, proving that rare diamonds continue to be go-to investments. In Geneva, sales at the ...

The largest red diamond ever is the Moussaieff Red, a 5.11-carat polished gem that takes its name from Shlomo Moussaieff, a renowned Israeli jeweler and antiquities collector. He bought it in 2001 for ...

"Large, vivid fancy color diamonds are extremely rare and very valuable," according to the Gemological Institute of America (GIA). The gem is around 0.84 inches at its longest point and is ...

Like a rare, 5 carat, D-Flawless Kwiat diamond, for example. Here’s how. Auslander’s team identifies macro trends (like colored diamonds) in the high-end gem space and partners with brands who ...