Natural Diamonds & How They Are Formed

Essentially, a diamond is a compressed form of carbon that come to life only when the most unique set of criteria are met.

High Pressure, High Temperature

The diamonds that are formed under the earth’s surface are known as natural diamonds. They are carbon-bearing materials (with a chemical makeup that is similar to coal) that form when exposed to the perfect combination of high pressure and high temperature conditions, occurring between depths of 140 and 180 km beneath the surface of earth, in earth’s lithospheric mantle, or at the site of a meteorite strike. After a period of 1 to 3 billion years, until the diamond is formed, it travels to the earth’s surface by deep-origin volcanic eruptions via streams of molten rock that go through earth’s volcanic pipes. As it travels, it acquires inclusions and flaws, giving each diamond its own unique fingerprint. No two natural diamonds are alike—each one displays a unique colour or clarity, and is a wonder of the world. Many diamonds can be found in alluvial deposits, along shorelines and in rare cases in glacial deposits. Essentially, a diamond is a compressed form of carbon that come to life only when the most unique set of criteria are met. This is a natural phenomenon, and attribute the diamond’s rarity and value in the world.

Diamond Historical Facts

  • Diamonds form about 100 miles below ground and have been carried to the earth’s surface by deep volcanic eruptions.
  • Diamonds are made of a single element—they’re nearly 100% carbon. Under the immense heat and pressure far below the earth’s surface, the carbon atoms bond in a unique way that results in diamonds’ beautiful and rare crystalline structure.
  • Diamonds are the very hardest natural substance. The only thing that can scratch a diamond is another diamond.
  • The largest diamond ever discovered was called the Cullinan diamond, and weighed in at an amazing 3106 carats, or 1.33 pounds. Discovered in 1905 in South Africa, the mine’s owner and the South African leaders gave the diamond to King Edward. The Cullinan was eventually cut into nine large diamonds and 100 smaller ones, and the three largest of these are on display in the Tower of London as part of the crown jewels.

Expert Advise

Keeping in mind that buying and selling diamonds is complex process, we understand that qualified experience is essential. You may or may not have the accurate information or knowledge of making an informed decision, and getting the best value for your diamonds. At Uniglo Diamonds, you can stay rest assured of receiving the best value for your diamonds thanks to our experience of over ten years in valuing and buying diamonds. We have gained the expertise and knowledge needed to offer you the highest prices for your diamonds. You can book an appointment, free of change and without obligation, and benefit from our trustworthy experts on your every transaction.