Zircon (pronunciation: /ˈzɜːrkɒn/or /ˈzɜːrkən/;is a mineral belonging to the group of nesosilicates. Its chemical name is zirconium silicate and A common empirical formula showing some of the range of substitution in Zircon forms in silicate melts with large proportions of high field strength incompatible elements. For example, hafnium is almost always present in quantities ranging from 1 to 4%. The crystal structure of zircon is tetragonal crystal system. The natural color of zircon varies between colorless, yellow-golden, red, brown, blue, and green. Colorless specimens that show gem quality are a popular substitute for diamond and are also known as “Matura Daimond