According to the American Gem Trade Association, ammolite is one of the world’s rarest gemstones. Ammonite fossils have been found across the globe, but the gemstone variety has so far only been ...
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On the trail of the Paraiba tourmaline: In search of one of the world's rarest gemstonesIn Boghossian’s Palace Voyages collection, inspired by the palaces of the Silk Road, there is a stunning suite of necklaces and earrings of electrifying turquoise-coloured Paraiba tourmalines ...
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