Topaz

关于

Topaz is a fascinating gemstone known for its wide range of colors and its status as the birthstone for November. It is a silicate mineral of aluminum and fluorine, with the chemical formula Al2SiO4(F,OH)2. Natural topaz is often colorless, but it can also be found in hues of blue, brown, orange, gray, yellow, and sometimes even red, depending on the types of impurities present.