Danburite, is a relatively new gemstone discovered in 1839 in Danbury, Connecticut. The original deposit is now buried under the city of Danbury. With a hardness of 7, danburite is quite hard and suitable for any kind of jewelry. Because of its high refractive index, well cut danburites are remarkably bright and can look something like diamonds. Today, most of colorless danburite comes from Mexico. It makes an especially brilliant gem because of its extreme clarity.