White gold is an alloy of gold and at least one white metal. Its properties vary depending on the metals and proportions used. White gold is commonly alloyed with nickel, silver and zinc to enhance the metal's strength and give it a white appearance. There are some nickel-free alloys available for people who may be allergic to nickel.

Because the natural color of white gold is actually a light grey color, it is typically rhodium plated to improve its appearance. Rhodium is a metal very similar to platinum and gives white gold a bright and reflective finish. Rhodium is very white and very hard, but it does wear away eventually. To keep a white gold ring looking its best, we recommend having it re-rhodium plated every 12 to 18 months.