Gold shows its colors
Elegant red, popular rose or classic shades of yellow gold — how are the many fine nuances of gold created? Why do alloys with other metals play a role in these nuances? We’d like to show you how this incredible range of colors is created and reveal how various metal alloys help our casters achieve the most subtle shadings.
In Germany the fineness of an alloy (i.e. the content of the most precious metal it contains) is always expressed in terms of parts per 1,000. For example, an alloy that is 75 percent pure gold is expressed as 750 parts per 1,000 (18 carat gold).
The white color of white gold was formerly created by adding nickel. After more and more cases of nickel allergy came to light, jewelrymakers switched from nickel to palladium, a chemical element in the platinum group.