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5. Taaffeite. Taaffeite is a very rare lilac gem. It is used in jewelry. The price of 1 carat (0.2 grams) of this stone is 2400 dollars.
5. Taaffeite. Taaffeite is a very rare lilac gem. It is used in jewelry. The price of 1 carat (0.2 grams) of this stone is 2400 dollars.