PRECIOUS METALS
PRECIOUS METALS. Metallurgy, Properties, Issues By Aldo M. Reti. Topics:. Metallurgical Aspects Gold Karat System Legal Aspects, Hallmarking Color Depletion Gilding, Gold Leaf Silver (Ag/Cu System), Reticulation Platinum (Pt Alloys). Why “Precious”?. Expensive, Rare, Desirable
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