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Diamonds are composed of crystallized carbon atoms that are arranged in cubic structures. Diamonds form about 100 miles below the Earth's surface, in molten rock where the right amounts of pressure and heat to transform carbon into diamond exist.

en.wikipedia.org/wiki/Diamond

Diamond is a metastable allotrope of carbon, where the carbon atoms are arranged in a .... Diamonds can also form under other naturally occurring high- pressure conditions. Very small diamonds of micrometer and nanometer sizes, known as ...

geology.com/articles/diamonds-from-coal

Diamond formation: Diamonds found at or near Earth's surface have formed through four different processes. The plate tectonics cartoon above presents these ...

www.smithsonianmag.com/science-nature/diamonds-unearthed-141629226

Diamonds are formed deep within the Earth about 100 miles or so below the surface in the upper mantle. Obviously in that part of the Earth it's very hot. There's a ...

sarine.com/blog/category/diamond-industry/how-diamonds-are-formed

Sep 15, 2016 ... How diamonds are formed depends on where they originate. Deep in ... the lab? The truth is, man made or naturally grown diamonds are similar.

www.ask.com/youtube?q=How+Are+Diamonds+Formed%3F&v=vHPOp69SO9E
Nov 27, 2009 ... Clip from National Geographic regarding the formation of diamonds.

beyond4cs.com/faq/the-formation-process-of-diamonds

Have you ever wondered where the sparkling jewels on your ring come from? Check out some fascinating facts about the formation process of diamonds here.

www.livescience.com/32266-how-are-diamonds-made.html

Nov 13, 2012 ... Diamonds are made out of carbon — highly organized carbon, that is. Geologists are still guessing how diamonds formed in the Earth from 1 ...

www.77diamonds.com/how-are-diamonds-formed.html

Read about how diamonds are formed and the processes involved in making diamonds into beautiful jewellery.

www.whiteflash.com/about-diamonds/diamond-education/diamonds-how-do-they-form.htm

Learn about diamonds and how they are formed, from their origins deep in the earth to faceted gem diamonds of extreme light performance.