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Russian gold 585 - what is it?
A basis of the sampling system in Russia is the number of milligrams of the main precious metal in 1 gram (or gram in kilogram) of the alloy. In the metric system of measures and scales the value of the sample can be considered as well as the number of scale parts (proportion) of the main precious metal in 1000 scale parts (proportion) of the alloy. 585 sample - 58.5% gold content of the alloy.