Blue Nile Glossary
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  The rarest of all precious metals, platinum is an extremely popular metal for jewellery. It's durable, resists tarnishing and is hypo-allergenic. True Platinum is 95% pure with 5% alloy and should be marked with 950 Plat or Plat. European jewellers also use 90% pure or 900 platinum in Jewellery.


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