Rhodium Plating
/ROH-dee-um/
Definition
An electroplating process where a thin layer of rhodium (a platinum-group metal) is deposited onto jewelry to create a bright white, highly reflective, and scratch-resistant surface.
Rhodium plating puts a microscopic layer of one of the rarest metals on earth onto your jewelry. Rhodium sits in the platinum group. It's harder, whiter, and more reflective than white gold or sterling silver. That's why virtually every white gold ring you buy at retail has been rhodium plated before it hits the display case. White gold alloys contain gold mixed with white metals like nickel, palladium, or silver. The result is naturally gray-yellow, not the bright white you see in ads. Rhodium fixes that. The plating process dips the piece in an electroplating bath. Rhodium ions deposit onto the surface at about 0.75-1.0 microns thick. Thin enough that you can't see the layer, thick enough to change the color completely. The plating wears off with friction. Rings go first, especially on the shank underside. Earrings and pendants last longer. Expect to replate every 1-2 years with daily ring wear. Replating costs $40-$80 at most independent jewelers. Some shops include it free with a purchase. Rhodium market price fluctuates wildly. In 2021 it hit $29,000/oz. More recently it trades around $4,000-$8,000/oz, still pricier than gold on many days. That volatility is why replating prices vary shop to shop. Hypoallergenic benefit: rhodium is inert and nickel-free. If your white gold alloy contains nickel and your skin reacts, the rhodium layer acts as a barrier. Once it wears through, irritation can return. Platinum and palladium white gold alloys skip the plating step entirely because they start white. I've seen clients switch to platinum specifically to stop the replating cycle.
Usage in the Trade
Rhodium plating is applied to virtually all white gold jewelry, and frequently to sterling silver pieces. It is discussed in the context of white gold maintenance, jewelry care, and metal comparisons.
Examples
Replating a white gold engagement ring at a local jeweler costs $40-$80 and takes 3-5 business days. The rhodium layer is about 0.75 microns thick and lasts 12-18 months with daily wear.
A 14k white gold wedding band purchased for $800 at retail already has rhodium plating applied at the factory. Without it, the same band would look slightly yellow-gray under natural light.
Frequently asked questions
Why does white gold need rhodium plating?
White gold alloys are naturally gray-yellow because gold is yellow and the white metal mix doesn't fully mask it. Rhodium plating creates the bright, cool white finish buyers expect. Without plating, most white gold looks noticeably warmer within weeks of wear.
How much does rhodium replating cost?
Most jewelers charge $40-$80 to replate a ring, depending on size and metal. Earrings and pendants cost less, around $25-$50. Some retailers include one free replating with purchase. The process takes 3-5 business days.
How often should I replate white gold?
Every 1-2 years for rings worn daily. You'll notice a yellow tint appearing first on the bottom of the shank where friction is highest. Earrings and necklaces may go 2-3 years between replating. Replating is routine maintenance, not a sign of poor quality.