View our stunning collection of white gold engagement rings, including enduring solitaires, romantic vintage inspired styles, and unique modern designs. What is white gold? A white gold engagement ring is achieved when an alloy—or another metal—is added to yellow gold to affect the color. White gold engagement rings are coated in rhodium, which is a hard metal in the platinum family, which increases and shields a ring's white color. Click through to see some of our favorite white gold engagement rings!