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Gold bullion - gold color
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Colored Gold Metal Alloys: Colors of Gold Jewelry

Colored Gold Metal Alloys Gold colors: green, rose and white are colored gold metal alloys. Gold colors are made by combining silver, copper, palladium & other metals to make gold metal alloys. Gold colored jewelry can also be purple, blue, black etc., being intermetallic gold colors. Photo by hto2008Pure 24k gold is only ever one [...]