The diamond is a plain, crystallized carbon. This crystallized form, brilliance and its hardness is what makes it highly prized and desirable. The colorless (transparent white) diamond is the most popular, however they do occur in other colors, usually pastel. These are called Fancy Diamonds. The rarer colors are pink, light blue and green and most expensive.One of the most important sources of diamonds is also one of the earliest known sources: India. Discovery of diamonds in Brazil took place in 18th century while in Africa it was in the 19th century. The 20th century brought many other sources such as Russia, Australia and Canada.
