You may have heard of diamond qubits, but diamonds aren't the only gemstones that can be used to store quantum information. A new study reveals that spinel, a vibrant and rare gem, can also be used as ...

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 ...

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 ...