Topaz is a fairly common and low-cost gemstone. It can be found in enormous and flawless crystals, which can be faceted into huge gemstones which can weigh thousands of carats. Topaz is a hard and long-lasting gemstone, and will not dissolve in maximum chemical solvents. However, it does have perfect cleavage which can make it prone to chipping or forming flaws if banged hard. A variety of impurities and treatments may make topaz wine red, gray, reddish-orange, pale green, pink and opaque to translucent. Topaz is also pleochroic, meaning that the gem can show diverse colors in various crystal directions.