The alloys used affect color even more than the content of gold. A substantial addition of copper gives a beautifully rosy hue while the introduction of nickel and zinc adds a lime greenish tint. Gold that is combined with silver and nickel provides a whitish metal with a slight golden tone that is often rhodium plated to create a bright white finish.
Because of its composition, gold is less susceptible to decay allowing it to withstand the test of time. An alluring aged look is formed when the alloyed metals interact with air to create a darkened orange tarnish that is often seen in Victorian estate pieces.
Gold will always be a transformative medium and a valuable asset to any jewelry box.