How to Use Rhodium Plating Solution for White Gold

By Pepetools - Precision Engineered Professional Equipment | Published: 2026-10-21

Category: How-to Guides

Learn the step-by-step process for rhodium plating white gold jewelry at home or in a workshop, including preparation, application, and common mistakes to avoid.

Quick Answer

To rhodium plate white gold jewelry, thoroughly clean and degrease the piece, then apply a pre-mixed rhodium bath using a plating pen or tank setup, following the solution's recommended voltage and time.

Why Rhodium Plating Matters for White Gold

White gold jewelry is typically alloyed with nickel or palladium and then plated with rhodium to achieve a bright, mirror-like finish. Over time, the plating wears off, revealing a yellowish tint underneath. Re-plating restores the original brilliance and protects the metal from scratches and tarnish.

Choosing the Right Rhodium Solution

Pre-mixed rhodium baths, like the Cohler Superbrite Rhodium "White Gold" Bath Plating Solution, simplify the process because they contain everything needed in one bottle. You can use them straight out of the bottle without additional mixing or measuring. This reduces the risk of errors in concentration or contamination.

Step-by-Step Rhodium Plating Process

Clean and Degrease the Jewelry: Use an ultrasonic cleaner or a strong degreasing solution to remove all oils, dirt, and polish residue. Rinse thoroughly with distilled water. Any contamination will cause the rhodium to peel or look cloudy. Even a fingerprint can ruin adhesion—wear clean gloves and handle the piece by the edges.
Set Up Your Plating Station: Pour the pre-mixed rhodium solution into a clean glass beaker or plating tank. Connect the positive lead (anode) to a platinum-plated titanium anode or carbon rod, and the negative lead (cathode) to the jewelry piece using a conductive wire or clip. Make sure the jewelry is fully submerged and not touching the anode to avoid short circuits.
Apply the Correct Voltage and Time: Set your rectifier to the voltage recommended by the solution manufacturer (typically 3–6 volts for a rhodium bath). Plate for 30–60 seconds, depending on the desired thickness. Longer plating gives a brighter, more durable finish but can cause buildup on edges. Start with the lower end of the time range—you can always add more, but removing excess rhodium requires stripping and re-plating.
Rinse and Dry: Remove the jewelry from the bath, rinse immediately in distilled water to stop the plating reaction, then dry with a soft, lint-free cloth. Do not rub hard, as the fresh rhodium layer is thin and can scratch. Use a gentle blotting motion instead of wiping to preserve the new finish.
Inspect and Polish (Optional): Examine the piece under good lighting. If the finish is dull or uneven, you may need to strip the plating and start over. For a high-gloss shine, you can lightly buff with a clean, soft polishing cloth designed for plated surfaces. Avoid using abrasive compounds—they will remove the rhodium layer you just applied.

Product Used in This Guide

Cohler Superbrite Rhodium "White Gold" Bath Plating Solution: Pre-mixed rhodium bath ready to use as is; produces a brilliant bright white finish at room temperature. No mixing or measuring means you can start plating immediately, and the room-temperature operation avoids the need for heated tanks.
Cohler Superbrite Rhodium "White Gold" Bath Plating Solution