A transparent gemstone that displays pleochroism, when light is passed through it from different direction.
See Alexandrite Tsarstone collectors guide, Definition of Trichroism, http://w.alexandrite.com/viewpage.html?id=GG-105-00005 (A transparent gemstone that displays pleochroism, when light is passed through it from different direction. ) (as of Apr. 06, 2026, 15:30 GMT).