Even among that group, however, there's a difference of opinion about what's considered "too light." GIA uses lab-graded comparison stones to determine if the green color is dark enough and saturated ...
Its leaves are naturally darker, but the specific shade can vary from light to dark green depending on the variety. It can also tolerate some shade. Some of the best known darker green cultivars ...
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 ...
The varying presence of these three elements gives emerald its range of color. Chromium and vanadium make an intense green color. Iron gives the stone a bluish tint. The most valuable emeralds are ...