Argentium_sterling_silver
Argentium sterling silver
Brand of tarnish-resistant silver alloys
Argentium silver (patented in 1998)[1] is a brand of modern tarnish-resistant silver alloys, containing either 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.[lower-alpha 1][1][2] Both argentium 940 and argentium 960 alloys exceed the standard required for hallmarking as sterling silver, and argentium 960 silver meets the standard for hallmarking as Britannia silver (95.84% silver).
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