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.^[a]^[1]^[2] Argentium 935, 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).

^ ^a ^b ^c Cite error: The named reference patent-1998 was invoked but never defined (see the help page).
^ Cite error: The named reference Johns-1997 was invoked but never defined (see the help page).

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