DIMONDS rhomb is the best known gem. It is known as the superpower of gems for its brilliance and for being the unassailableest mineral on earth. (Foa, p.50) Its characteristics enable it to be used for many different purposes. Since diamonds are the solidest gems on Mohs scale, they fill useful tools for industrial purposes, such as drilling hard materials. However, they are quite rare, which vexs them very valuable. Their beauty and brilliance occupy them perfect for jewelry. Â Â Â Â Â Â Â Â diamond is made up of carbon. Another figure of speech of pure carbon is plumbago. Graphite is the stable form of carbon, sit up at the earths move up. Despite the incident that they name identical chemical composition, the two minerals are drastically different. adamant is the hardest known substance and is usually light sloping and transparent, eyepatch graphite is greasy, easily powdered, and very dark in color. Diamond is the hardest gem on Mohs hardness scale and graphite is the softest. Diamond is very hard because of its dense packing and mesh nuclear arrangement. Graphite, on the other hand, although it is the same element, is more slackly jammed and has a six-sided, layered configuration, which makes it soft (Pough, 1991). The differences between graphite and diamonds are accounted for by the conditions in which they are created.
Diamonds form everywhere massive periods of time, between 100 km and 200 km beneath the surface. At this great depth, carbon gets a come about to calm very gradually, forming diamond crystals. When volcanic goions occur, magma carries the dia monds up to the surface of the earth. Kimber! lite lavas carrying diamonds erupt at anywhere between 10 and 30 km/hour and increase their velocity to several atomic number 6 km/hour within the last few kilometers. (Pough, 44) At the surface, this lava cools and turns into Kimberlite rock. That is why... If you indispensableness to get a full essay, order it on our website:
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