Suitably-colored, synthetic sapphire and spinel, used to imitate alexandrite.
See Alexandrite Tsarstone collectors guide, Definition of Alexandrite-like synthetics, http://w.alexandrite.com/viewpage.html?id=GG-086-00008 (Suitably-colored, synthetic sapphire and spinel, used to imitate alexandrite.) (as of Jun. 01, 2026, 04:44 GMT).