To make a diamond, you simply squeeze graphite to pressures of around 20 gigapascals (or almost 200,000 times atmospheric pressure), resulting in one of two different arrangements of carbon.
Can you convert graphite to diamond?
It is known that graphite can be converted into diamond when subjected to high pressure and high temperatures. The graphite-diamond transformation can be achieved directly by subjecting graphite to ultra high pressures (> 100 kbar) and temperatures ( > 2000°C).
Why is it so difficult to make diamond from graphite?
To form diamond, the hexagonal rings in graphite first have to deform. … When this happens, the graphite forms into a metastable allotrope of carbon called hexagonal diamond. This, they say, is the reason why diamond is so difficult to make: carbon prefers to form into a different hexagonal structure.
Are diamonds made from coal or graphite?
Diamond (left) and graphite (right) are both made of carbon, but their atomic structure is what makes them look so different from one another. Click to enlarge. Surprisingly, these gems are made of only one element, carbon. Carbon is the same element that makes coal or graphite used for pencils.
Can coal become diamond?
Over the years it has been said that diamonds formed from the metamorphism of coal. According to Geology.com, we now know this is untrue. “Coal has rarely played a role in the formation of diamonds. … The diamonds form from pure carbon in the mantle under extreme heat and pressure.
Is graphite to diamond endothermic?
The conversion of diamond into graphite is an endothermic reaction.