Topaz Gemstone

Topaz Gemstone. Topaz is a silicate mineral of Aluminium and Fluorine with the chemical formula of Al2SiO4. Pure topaz is colorless and transparent but it is usually tinted by impurities. Typical topaz is wine, yellow, pale gray, reddish-orange or blue brown. It can also be made white, pale green, blue, gold, pink , reddish-yellow or