Diamond is a native mineral the chemical formula is Carbon. The molar mass is 12.01 g*mol-1. Typically yellow, brown, gray to colorless. Crystal system is Octahedral . Diamond is 10 on Mohs scale of hardness. The scale ranges from 1-10.Luster is Admantine. Diamond is transparent to subtransparent to translucent. Specific gravity is 3.52 plus or minus .01 in range. Refractive Index is 2.418(nm). Melting point is pressure dependent. In mineralogy Diamond(from the ancient greek word adamas"unbreakable". Diamond has superlative physical qualities. Natural diamonds are extremely Rare and are formed by pressure at depths 140-190 km. Diamonds occurred 1billion to 3.3 billion years ago. ~Todd Drake www.diamondsbydrake.com 214.6813712 ktdrake88@gmail.com
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