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  2. Sterling silver - Wikipedia

    en.wikipedia.org/wiki/Sterling_silver

    Sterling silver is an alloy composed by weight of 92.5% silver and 7.5% other metals, usually copper. The sterling silver standard has a minimum millesimal fineness of 925. Tiffany & Co. pitcher ( c. 1871 ) having paneled sides and repoussé design with shells, scrolls and flowers; top edge is repousse arrowhead leaf design

  3. Argentium sterling silver - Wikipedia

    en.wikipedia.org/wiki/Argentium_sterling_silver

    Argentium silver (patented in 1998) [1] is a brand of modern tarnish-resistant silver alloys, containing either 93.5%, 94% or 96% silver.Argentium alloys replace some of the copper in the traditional sterling silver (92.5% silver + 7.5% copper) with the metalloid germanium.

  4. Conservation and restoration of silver objects - Wikipedia

    en.wikipedia.org/wiki/Conservation_and...

    Silver is known in the chemistry world as a noble metal, which means it is resistant to corrosion, but not completely immune. Whether silver plating or pure silver, the composite of the metal will tarnish when exposed to air and sulfur. Tarnish is a chemical reaction on the surface of metal (copper, brass, silver, etc.) and causes a layer of ...

  5. Silver standards - Wikipedia

    en.wikipedia.org/wiki/Silver_standards

    Ninety-one (91) zolotniks have the equivalent millesimal fineness of 947[9]. Thus, the alloy contains 94.79% pure silver and 5.21% copper or other metals. [4] [5] Sterling silver has a millesimal fineness of 925. The sterling silver alloy is 92.5% pure silver and 7.5% copper or other metals.

  6. Fineness - Wikipedia

    en.wikipedia.org/wiki/Fineness

    For example, copper is added to the precious metal silver to make a more durable alloy for use in coins, housewares and jewelry. Coin silver, which was used for making silver coins in the past, contains 90% silver and 10% copper, by mass. Sterling silver contains 92.5% silver and 7.5% of other metals, usually copper, by mass.

  7. Tarnish - Wikipedia

    en.wikipedia.org/wiki/Tarnish

    Tarnish does not always result from the sole effects of oxygen in the air. For example, silver needs hydrogen sulfide to tarnish, although it may tarnish with oxygen over time. It often appears as a dull, gray or black film or coating over metal. Tarnish is a surface phenomenon that is self-limiting, unlike rust. Only the top few layers of the ...

  8. When do the NFL playoffs start? Schedule, start date for 2024 ...

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    Shop the coziest gift ideas for all your favorite homebodies — all available at Walmart

  9. Talk:Sterling silver - Wikipedia

    en.wikipedia.org/wiki/Talk:Sterling_silver

    Sterling silver is an alloy of silver containing 92.5 by weight of silver and 7.5 by weight of other metals, usually copper. The sterling silver standard has a minimum millesimal fineness of 925. 92.5 what by weight of silver? I'm assuming that it's 92.5% ? Seattle Rex 03:28, 18 February 2017 (UTC)

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