Copper is a metal that has diverse benefits. Specifically, the copper in the industry, such as copper wire, machinery etc. the role of copper with silver jewelry may not be obvious, but many people seemed to forget that there are many kinds of value alloys. With copper as the ingredient that is missing.NAK alloy, features a copper color, mixed with gold, with gold at a rate of about 37% is in addition to and as a component of copper and silver.Pink gold Characteristics of gold-pink color is dyed pink, stylized gold pink comes from the mix of copper, in a proportion that is less than the copper metal alloy in using gold as an ingredient of approximately 75%, and other metals. The last sequence is copper.Red Gold Features of the red gold is similar to gold, pink, more. There is a mixture of the same type of metal, each by two main factors that make different types of gold is the quantity of copper copper is added in a ratio greater than gold, pink.
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