Yellow gold

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Yellow gold is availabe with a gold content of 33 to about 99%. Many yellow gold alloys follow the following scheme, where the alloys in practice usually contain additional metal parts to improve, for example, the castability or the hardness:


Designation Gold content Silver content Copper content
Yellow gold 333 (pale yellow) 33.3 % 53.4 % 13.3 %
Yellow gold 333 (medium yellow) 33.3 % 33.3 % 33.3 %
Yellow gold 333 (yellow) 33.3 % 11.4 % (*) 43.1 % (*)
Yellow gold 375 (pale yellow) 37.5 % 55.0 % 7.5 %
Yellow gold 375 (medium yellow) 37.5 % 42.5 % 20.0 %
Yellow gold 375 (yellow) 37.5 % 31.2 % 31.3 %
Yellow gold 585 (yellow) 58.5 % 30.0 % 11.5 %
Yellow gold 750 (full yellow) 75.0 % 12.5 % 12.5 %

(*) +12.2% Additional metals


See also: The color range of 18 carat gold