Red Diamond – $1,000,000 per carat

 

Red Diamonds (abcnews.com)

Red Diamonds (abcnews.com)

Above we featured the diamond as one of the most expensive gemstones, and coming in at number 1 with a price tag of over $1 million per carat is the red diamond. There are less than 30 red diamonds found around the world, with most of them being less than half a carat. You may assume that the red color comes from an impurity, but it is actually derived from plastic deformation of the crystal lattice. The famous 5.11ct Moussaieff Red Diamond was acquired in 2011 for $8 million and is the largest red diamond discovered in the world.

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