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  • Diamonds are the second most valued metals on earth after gold. Naturally, these precious stones are classified based on the type and quantity of impurities found on them. Basically, there are two main classifications of diamonds: type one which contains nitrogen molecules and type two which contains other impurities except nitrogen. Only 20% of diamonds are used as gemstones, with the rest used for industrial purposes. Here is a list of the different types of diamonds in existence.

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