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Sterling silver, subsequently, accommodates 92.5% of silver, as indicated by the markings. The remaining 7.5% of the metallic is normally copper, while there may also be zinc or nickel. Either means, the additional 7.5% of steel is there to make the silver stronger and more durable, since silver on its own is fairly delicate. Copper is mostly used as an addition and is most popular by the majority of jewellery makers and collectors.

In its pure form, copper is hypoallergenic with the only drawback with copper being its reactivity and the fact that it’s fairly inclined to tarnishing – copper reacts with oxygen to form copper oxide which is the reason for the tarnishing. When mixed with different metals, nonetheless, copper loses its hypoallergenic properties.