Diamond mining

What is a diamond?

A diamond is a precious stone consisting of a clear and colourless crystalline form of pure carbon, the hardest naturally occurring substance. When transparent and free from flaws is highly valued as a precious stone, it is used in jewellery. “a diamond ring”

Diamond Facts

The word diamond comes from the Greek word meaning unbreakable.

Diamond is the hardest natural material known and is often used for industrial cutting and polishing tools.

Diamond is the best known thermal conductor (heat transfer) among naturally occurring substances.

Most of the Earth’s natural diamond deposits are found in Africa.

Around 26,000 kilograms of diamonds are mined around the world every year. They are worth billions of pounds to the powerful companies that control their production.

Diamonds have often been a source of conflict and disagreement, the term blood diamond refers to a diamond mined in an unstable area and sold to finance war. This issue was brought to public attention in the 2006 film named Blood Diamond.

Diamond is the world’s most popular and sought after gemstone. They are frequently worn as part of jewellery such as rings and necklaces. As well as their rarity, they are also well suited to jewellery because they polish well and can only be scratched by other diamonds.

Diamonds are cut with considerable precision to optimize the need and beauty of each specific diamond.

Diamonds are valued according to their cut, colour and carat.

The Koh-i-Noor diamond was found in India and once thought of as the largest diamond in the world. It is now part of the British Crown Jewels in the Tower of London.

Naturally occurring diamonds are formed over billions of years under intense pressure and heat. They are often brought to the Earth’s surface by deep volcanic eruptions.

The technology for synthetic diamonds was researched in the 1940’s and the first synthetically created diamond was produced in the 1950’s.

There are a number of techniques for producing synthetic diamonds, these include high-pressure high-temperature synthesis, chemical vapour deposition and detonation synthesis (literally blowing up carbon with explosives to create extremely small diamond grains).