What Makes the Gold Red or "Rose"?
Naturally, gold is reddish-yellow in color. In order to get the rose color, it is actually mixed with other types of metals to achieve the desired color. Typically, rose gold is comprised of 58.3-75% fine gold and 25-41.7% platinum and copper to achieve the soft, pink color. Most manufacturers alloy their gold with metals that most people have sensitivities to, such as nickel and cadmium, to tone down the red color of the copper. Our manufacturers only use the biocompatible elements platinum, zinc, and palladium to achieve the rose tone to their gold, even though it is not as cost effective.
Not only does alloying gold change the color, but it also improves the durability of the piece. The additional copper used to make rose gold greatly enhances the strength of the metal, since gold in its purest form (24 karat), is too soft and susceptible to damage for daily or even internal wear. One unique feature that has popularized rose gold, is that over time the red color of the copper naturally becomes more visible, in turn giving the jewelry a unique and vintage look.