How are Diamonds Made

How are diamonds made? Here’s how diamonds are made. Interesting facts and tidbits on diamond making, both natural and synthetic, useful to know before you buy diamonds.

Natural Diamonds

Diamonds are made naturally, and formed out of highly organized carbon. Rare diamonds of high value can be found deep underground beneath the Earth’s crust, 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. This explains the existence of various colored diamonds available.

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

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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