Taaffeite - $20,000 / Gram

Taaffeite is a highly rare and expensive precious gem. You can find this gem only in three countries around the world, China, Sri Lanka and Tanzania. It was first discovered by Richard Taaffe in 1945. There are no other uses of Taaffeite except being used as a highly precious gemstone in jewelry making. This stone looks stunningly beautiful. Because of its rarity, it is priced around $20,000 a gram.

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