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<p>[QUOTE="mrbrklyn, post: 102767, member: 4381"]i was just reading this on wikipedia and thought it was disturbing.</p><p>-----------------------------------------------------------------------------------------------</p><p><br /></p><p>Silver Dips: There are now a great many silver dips and liquids available. These dips contain thiourea, and are the lazy man's method of polishing sterling. The item is dipped in the liquid, and within a few seconds it attains brightness. This brightness, however, is not caused by removal of the tarnish, but by chemical conversion of silver sulfide to a white substance that is harder to remove than the original tarnish, necessitating yet another polishing with more abrasive substances.</p><p><br /></p><p>Serious sterling collectors avoid silver dips. One reason is that silver dip tends to brighten areas of the design that should remain dark in order to give a relief effect. This is especially important in pieces that have Repoussé and chasing. Another reason is the difficulty in removing the end product of the conversion, which usually requires an abrasive cleanser.[/QUOTE]</p><p><br /></p>
[QUOTE="mrbrklyn, post: 102767, member: 4381"]i was just reading this on wikipedia and thought it was disturbing. ----------------------------------------------------------------------------------------------- Silver Dips: There are now a great many silver dips and liquids available. These dips contain thiourea, and are the lazy man's method of polishing sterling. The item is dipped in the liquid, and within a few seconds it attains brightness. This brightness, however, is not caused by removal of the tarnish, but by chemical conversion of silver sulfide to a white substance that is harder to remove than the original tarnish, necessitating yet another polishing with more abrasive substances. Serious sterling collectors avoid silver dips. One reason is that silver dip tends to brighten areas of the design that should remain dark in order to give a relief effect. This is especially important in pieces that have Repoussé and chasing. Another reason is the difficulty in removing the end product of the conversion, which usually requires an abrasive cleanser.[/QUOTE]
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