Diamond :from the ancient Greek adámas “unbreakable”) Diamond has the highest hardness and thermal conductivity of any bulk material. Those properties determine the major industrial application of diamond in cutting and polishing tools. Most natural diamonds are formed at high temperature and pressure at depths of 140 to 190 kilometers in the Earth’s mantle. Carbon-containing minerals provide the carbon source, and the growth occurs over periods from 1 billion to 3.3 billion years (25% to 75% of the age of the Earth). Diamonds are brought close to the Earth’s surface through deep volcanic eruptions by a magma, which cools into igneous rocks known as kimberlite.
Pedro Da Silva
Manufacturing Jeweller
