Chrysoberyl is most commonly known for its bright yellow/greenish to yellow colour. It is formed due to extreme pressure and heat in the earths crust as a result of the pegmatic process. The most valuable varieties of Chrysoberyl show of a beautiful chatoyancy when cut into cabs. These are called "Cats Eye Chrysoberyl". Some of the best Chrysoberyl has been found in the Urals (Russia) although that source is mostly depleted. The largest Chrysoberyl ever found weighs 66 carats.
The name Chrysoberyl is derived from the Greek words "chryso", which means golden and "Beryl which means green. It was extremely popular in Victorian and Edwardian times when it was referred to as Chrysolite. It has been recorded that for thousands of years in Asia, Chrysoberyl was thought to ward off the "Evil Eye".
Although yellow Chrysoberyl can lack fire, when cut well it is quite brilliant. Look for a well-cut stone, which displays a nice bright yellow colour.
Indian Name: Ketu or Lehsuniya
Color: green, yellow, brownish to greenish black