Does palladium need rhodium plating?

Because it is a hard metal, a rhodium plated piece of jewelry will be more scratch resistant. Rhodium plating is mainly used on silver-hued metals, such as white gold, palladium or silver.

Does palladium turn yellow?

Do Palladium Rings Tarnish? ... Palladium rings are comprised of 95% pure palladium which means they do not contain the metals that cause silver to tarnish. White gold needs to be treated with a process involving "re-rhodium" otherwise it will turn back to its yellow gold color every few years.