Choosing the right platinum alloy

Have you noticed how many gold engagement rings have platinum settings? This is because platinum’s high density, strength, and resistance to metal erosion makes it the most ideal metal for securing valuable gems—provided, of course, the right platinum alloy is used
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Freshwater pearls of the world

Pearl-producing freshwater mussels occur in a wide geographical distribution on the Northern Hemisphere, resulting in natural pearls in Europe, North America, and East Asia, and, today, supplying the vast quantities of cultured pearls in China.
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