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"The words "silver" and "sterling silver" describe a product that contains 92.5% pure silver. Silver products sometimes may be marked 925, which means that 925 parts per thousand are pure silver. Some jewellery described as "silver plate" has a layer of silver applied to a base metal. "Coin silver" is used for compounds that contain 90% pure ...
Fine silver, which is 99.9% pure silver, is relatively soft, so silver is usually alloyed with copper to increase its hardness and strength.Sterling silver is prone to tarnishing, [1] and elements other than copper can be used in alloys to reduce tarnishing, as well as casting porosity and firescale.
925: (37 ⁄ 40) Sterling silver. The UK has used this alloy from the early 12th century. Equivalent to plata de primera ley in Spain (first law silver) 917: a standard used for the minting of Indian silver , during the British raj and for some coins during the first Brazilian Republic. 916: 88 zolotnik Russian silver
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Because pure silver is very soft, most silver used for these purposes is alloyed with copper, with finenesses of 925/1000, 835/1000, and 800/1000 being common. One drawback is the easy tarnishing of silver in the presence of hydrogen sulfide and its derivatives.
New wedding ring has 'married' embossed on the inside Updated January 5, 2017 at 1:08 PM Wedding rings serve as instant signs to others that someone is off the market -- but what if a husband or ...
Sterling silver has a millesimal fineness of 925. The sterling silver alloy is 92.5% pure silver and 7.5% copper or other metals. This alloy was used by the United ...
Jostens, the ring-maker, said in a news release that the rings were created in 10-karat white and yellow gold with diamonds and rubies. The rings include a nod to the Super Bowl-winning pass play ...
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