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(IDEX Online) - A 181.61-carat gem described as "the world's largest flawless Paraiba tourmaline" is to be auctioned at ...
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On the trail of the Paraiba tourmaline: In search of one of the world's rarest gemstonesMore importantly, Perez explains, “this gem is so rare that every jewel embellished with a high-quality Paraiba tourmaline is unique and can never be repeated”. Their reception in the Middle ...
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