Pearl

This is one of the biggest gemstone ever found?

The largest semi-precious gemstone, unfaceted, ever found weighs six tons and measuring 1.6 meters in diameter, "the pearl" as it is called by its owners is the largest ever discovered and is estimated to be worth two billion yuan ($301.197 million); in China pearls are prized more highly than diamonds. The stone, formed mostly of fluorite mineral, glows green in the dark and in China is prized more highly than diamonds. The finders took three years to grind the raw gem down to its pearl shape.

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