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“While platinum is best known for its use in jewelry, more than 60% of platinum is used for other industrial purposes such as catalytic converters in autos and pacemakers in the medical field. Because of its rarity and the rapidly increasing demand for this versatile metal, the price has soared in recent years. ”
Escuela libre de musica video sexo The high price of platinum has caused some jewelry manufacturers to start using lower percentages of platinum and to use other alloy metals to lower the cost of the jewelry. Unfortunately, these new alloy mixes are reducing the very qualities that made platinum desirable. The new alloys produce more brittle platinum that is more susceptible to damage.
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Dirty penny hentai video For example, metal that is stamped 585 Platinum is really only 58.5% pure platinum and 41.5% copper and cobalt with the result that it is more likely to crack, crater, discolor or irritate sensitive skin. Less scrupulous jewelry vendors remove the 585 stamp and complicate the situation, leading consumers to believe the metal is the traditional high quality platinum.
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Historically the jewelry shopper did not have to be concerned about the purity of platinum because the alloy metals were in the platinum group the quality was uniform regardless of the particular alloy or percentage used.