How are diamonds made?

Natural Diamonds

How are diamonds made? Here’s how diamonds are made naturally: out of highly organized carbon. Rare diamonds of high value can be found deep underground, where the pressure formed by layers of rocks and the high temperature below the Earth’s surface allow diamonds to be formed. And as gases such as nitrogen and sulfur are trapped inside the crystal, they color the diamond formed.

Similarly, diamonds are formed when the igneous rock kimberlite undergoes extreme heat and pressure.

Synthetic Diamonds

High pressure, high temperature

Diamonds can be made by subjecting graphite to high pressure and high temperature. Mixed with a metallic solution, then combined with intense electricity, graphite can thus be converted into gem-quality diamond in just a few days.

Chemical vapor deposition

One of the most advanced methods available, chemical vapor deposition produces perfect diamonds that are flawless. A piece of diamond is placed in a depressurizing chamber, then suffused with natural gas and heated to a high temperature. Carbon atoms will then rain down on the diamond, producing flawless diamond.

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