A rare gemstone from one of the world’s greatest collections, which caused a decade of family rift before passing through the hands of gamblers and aristocracy, has emerged for sale for the first time ...

Add Yahoo as a preferred source to see more of our stories on Google. You may have heard of diamond qubits, but diamonds aren't the only gemstones that can be used to store quantum information. A new ...

A rare deep-pink spinel gem that once formed part of the famous Hope collection is to be sold at auction for at least £200,000 later this month. The Hope Spinel, which weighs in at 50.13 carats, was a ...

In 2016, jeweler Olivia Young of Ouroboros sold a red spinel ring for £6,000 ($7,700). Last year, the client’s insurance company paid out £30,000 ($38,400) to replace it. Experts say that this ...

A rare colored gem from one of the world’s most distinguished collections sold for nearly five times its high estimate at Bonhams London Fine Jewellery Sale Thursday. The 50.13-carat Hope Spinel ...