White Topaz White Topaz is a synthetic man made colorless gemstone which is mainly used in ornamental purposes. White Topaz Product Properties :-Chemical composition :- Al2(F,OH)2 SiO4 (Fluosilicate of aluminium)Crystal System :- OrthorhombicCrystal Habit :- PrismaticHardness :- 8Specific Gravity :- 3.53 – 3.56Refractive Index :- 1.610 Click image to enlarge