Diamonds are also produced artificially. Such diamonds are usually low in cost, and are mostly used for industrial purposes to cut through hard metals. Diamonds are also used on the tips of machines used to cut and polish precious stones. These are very rarely used in jewelry, and are made for industrial purposes only.
~ Diamonds are found mainly in South Africa, Russia, and parts of the USA. Deposits are generally found in areas which have had a high volcanic activity in the past, which explains how these pressurized bits of carbon reached the surface.