Ultrasonic devices and commercial jewelry cleaners will remove the oils that the emeralds have been treated with and will cause damage to the gemstones. Always put your jewelry on after you’ve ...
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On the trail of the Paraiba tourmaline: In search of one of the world's rarest gemstonesIt is rare for new gemstones to be discovered ... of a new gemstone excites jewellers around the world, and in the past 10 years designers have become fascinated by the Paraiba, with Chopard ...
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