Ride the wave! Rhodium plated sterling silver outline wave french wire earrings. Earrings measure 17.5mm and full hanging length is 29.5mm. ABOUT RHODIUM FINISH: A rhodium finish is plated over other metals to make it non-tarnish, and is a hard-wearing, scratch resistant metal - the same metal used to plate white gold! Rhodium is more expensive per ounce than gold, platinum, or palladium!