How are diamonds formed?


Quick Answer

Natural diamonds are formed deep within the earth, using heat and pressure found around 87 to 118 miles beneath the surface. Carbon compressed tightly together forms a crystal lattice, the purity of which determines colors in the diamond.

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Full Answer

Diamonds can come in blue, yellow, brown, green, purple, pink, orange and red. The carbon-binding process can take over a billion years for a diamond to be formed naturally. Synthetic diamonds can be created using a process that approximates the high heat and pressure used to create diamonds, and can create gem-quality stones. Industrial processes, such as metal grinding and bladed tools use synthesized diamonds to provide a long-lasting coating on cutting edges.

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