The 100-carat Emerald-cut perfect diamond joins five similarly rare stones in auction history. (Photo courtesy Sotheby’s) Today, Sotheby’s announced that a rare Emerald-cut 100.2-carat perfect diamond ...

A rare square 37-carat emerald owned by the Aga Khan fetched nearly $9 million at auction in Geneva on Tuesday, making it the world's most expensive green stone. Sold by Christie's, the Cartier ...

One of the most valuable jewels in the world is the emerald, or panna in Hindi. It is quite popular in jewellery and Vedic astrology due to its deep green colour and astrological advantages. However, ...

Explainer: Treated vs. Untreated Gemstones Appraiser Katherine Van Dell mentioned “treated” emeralds in her appraisal of a beautiful circa 1900 emerald and diamond ring. What enhancements are ...

It’s rare these days to see a diamond making major global headlines. But on Tuesday, the gem masters at Graff delivered a piece of news that’s too big to ignore—and that will undoubtedly go down in ...