The 6-carat alexandrite stone weighs approximately 1.2 gms (1.08 gms in ratti) and is a very rare type of gemstone belonging to the family of Chrysoberyl. Governed by Mercury Planet, and it is suggested to those whose Mangal Graha is weak in the horoscope. The color shifting is because of chatoyancy, in which a 6-carat alexandrite stone resembles an Emerald during the daytime and a Ruby during the night. Read More:- https://www.navratan.com/categ....ories/6-carat-alexan