Diamond is the hardest substance in nature. If we see the chemically, the chemical formula is C and it is an allotrope of Carbon. It is hardest because of its structure. Each carbon atom in it, surrounded by four other carbon atoms and connected to them by the strong covalent bond.
In India, Surat city is known as the hub of the diamond market.Surat is worldwide famous because of the art of the diamond polishing.
The Surat, jewellery industry operates in the field of manufacturing, importing as well as exporting. Nearly 15 lakh people are associated with the diamond jewellery industry of Surat. The fact that every 9 out of 10 diamonds cut and polished in the world hail from India and 75 % of all these are from the Surat jewellery manufacturers.
Surat a Diamond Research and Mercantile City, also known as DREAM City.