Topaz- Topaz is a silicate mineral of aluminium and fluorine. The crystallization of topaz is in the form of orthorhombic system. The pure topaz is available in colorless form and is transparent and the presence of impurities gives different colors. Different categories of topaz are imperial topaz, Brazilian topaz, blue topaz and mystic topaz. Topaz deposits are in Germany, Russia, Norway, Afghanistan, Sweden, Sri Lanka, Czech Republic, Pakistan, Italy, Japan, Brazil, Mexico, Australia, United States and Flinders Island. All the different colored topaz are used for jewelry purposes.