The rarest variety of jade comes in greens and purples and is a highly-prized gemstone in China. It is said that the Olmecs, ...

Pink diamonds are extremely rare and coveted. But a discovery made in Western Australia near a now-closed mine may help reveal new deposits of the jewels, researchers say.

This slightly larger 11.15-carat pink diamond sold for $57.7 million (about $5.1 million per carat) at Sotheby’s Hong Kong in October 2022. Both gems still don’t quite measure up to the Pink Star.