Rhodium Plating
A thin layer of rhodium — a platinum-group metal — electroplated onto jewelry for a bright white finish, tarnish resistance, and scratch protection.
Last updated: July 6, 2026
Detailed Explanation
Rhodium plating applies a thin layer of rhodium (Rh), a rare platinum-group metal, onto jewelry via electroplating. Rhodium is prized for its brilliant white color, extreme hardness (~800 HV on the Vickers scale), and exceptional corrosion resistance. In silver jewelry, rhodium plating prevents tarnish and provides a bright "white gold" appearance. In white gold jewelry, rhodium plating masks the naturally yellowish white gold alloy. Typical plating thickness is 0.1-0.5 microns. The plating wears over time, particularly on rings, requiring re-plating every 12-24 months with regular wear. Rhodium pricing fluctuates around 5,000−5,000−15,000/oz.
Common Uses
Silver jewelry anti-tarnish finishing, white gold jewelry brightening, luxury watch cases.
Advantages
Exceptional hardness and wear resistance, brilliant white color, prevents silver tarnish, hypoallergenic.
Limitations
Eventual wear requiring re-plating, expensive metal, thin layer wears through on high-friction areas.