Diamond – $15,000 per carat

 

Diamond (Credit: Dreamatico)

Diamond (Credit: Dreamatico)

Diamond (C) is one we’ve all heard of and is the centerpiece of most engagement rings. As noted in the chemical composition, diamonds are pure carbon arranged in a diamond lattice, which accounts for it’s incredible strength and durability. Diamonds are found in cooled kimberlites that formed over the course of 1 to 3 billion years.

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