Superblack Black Rhodium Plating Solution

Cohler Superblack Black Rhodium Plating Solution 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.

Features

• Deeper dark finish: Produces a darker oxide-grey/black tone than standard black rhodium baths.
• Room-temperature operation: No heating required — use with a platinized titanium anode.
• Tarnish-resistant coating: Delivers durable, professional results suited to jewelry finishing.
• Ideal for two-tone work and touch-ups: Add modern contrast, match dark stones, or accent textures, bezels, and prongs.
• Pre-mixed and ready to use: Not a concentrate — no dilution or mixing required before plating.

Specifications

Available Options

Notes

• This is the bath plating version only — it is not a concentrate and is not suitable for pen plating. A dedicated pen plating solution is available separately.
• Contains sulfuric acid. Always use appropriate PPE, adequate ventilation, and professional plating practices.
• Thorough surface preparation — including cleaning and activation or strike where required — is essential for proper adhesion and uniform color.
• Not all metals can be rhodium plated. Successful results require correct equipment, chemistries, and processes.
• Shipping restrictions: UPS Ground only. No air service or USPS. USA shipments only — cannot be shipped internationally.
• All sales are final. This product cannot be returned due to its hazardous material classification.