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Cohler Superblack Black Rhodium is a pre-mixed, ready-to-use bath plating solution that produces a darker, oxidized grey-black rhodium finish on gold and other precious metals. Formulated for durable, tarnish-resistant two-tone accents and repair work, Superblack plates at room temperature using a platinized titanium anode. For professional industrial/occupational use only.

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Key Features

• Deeper dark finish: Darker oxide-grey/black than standard black rhodium baths.
• Room-temperature operation: Use with a platinized titanium anode.
• Tarnish-resistant coating: Durable, professional results for jewelry finishing.
• Great for two-tone work & touch-ups: Match dark stones or add modern contrast.

Applications

• Selective two-tone plating on gold jewelry
• Refinishing and small repair jobs
• Dark accents on details, textures, bezels, and prongs

Important Notes

• This listing is for the bath plating version. It is not a concentrate and not suitable for pen plating (a dedicated pen solution is available separately).
• Chemistry: Contains sulfuric acid. Use proper PPE, ventilation, and professional plating practices.
• Surface preparation (cleaning, activation/strike where required) is essential for adhesion and uniform color.

Shipping Restrictions

• Ground shipping via UPS only. No air service or USPS.
• USA only. We cannot ship rhodium solutions internationally.
• All sales final / Not returnable. Hazardous materials.
• Successful plating requires correct equipment, chemistries, and processes; not all metals can be rhodium plated.

California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.