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Superblack Black Rhodium Plating Solution

Part # 145.424
Original price $395.00 - Original price $750.00
Original price
$395.00 - $750.00
Current price $750.00
Only 1 left!
Out of stock
by Cohler
Select Size: 1 Pint

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Product Details

Choose from 2 sizes:

  • 145.423  1/2 Pint
  • 145.424  1 Pint

For professional use only. For industrial/occupational use only. Not for consumer sale or use.

Cohler's new Superblack rhodium plating solution is a black rhodium plating solution that produces a darker oxidized grey-black plate on gold and other precious metals than ever before. Use it for a durable tarnish resistant dark finish for all your plating needs.  

Superblack has a deeper dark finish than the original Cohler black rhodium bath. It works better for matching dark stones or where you just want a darker black plating on your jewelry. Great for two-tone plating and touch up repairs. Plates at room temperature using a platinized titanium anode. 

This is the pre-mixed ready to use bath plating version of Superblack. It is not a concentrate and it is not suitable for pen plating.  A special pen plating solution is available, see related products below.

Contains Sulfuric Acid 

Available 2 sizes:

145.423 Pre-mixed half-pint size of Black Rhodium plating solution that contains 1/2 gram of Rhodium 

145.424 Pre-mixed pint size of Black Rhodium plating solution that contains 1 gram of Rhodium 

Shipping Restrictions:


Ground only via UPS! No air service, No Mail (USPS), No UPS 3 day, 2nd day or next day air allowed. 
USA only. We cannot ship Rhodium Plating Solutions outside the United States. 

Not Returnable. This item contains hazardous materials and cannot be returned.  All sales final. Successful plating requires multiple processes using the correct equipment and materials.  Not all metals can be rhodium plated. For product questions related to the proper processes and materials that can be plated, please contact manufacturer or search youtube for information.  For professional use only.


Link to instructions for rhodium plating

California Prop 65 Warning:
This product can expose you to chemicals including strong inorganic acid mists containing sulfuric acid, which is known to the State of California to cause cancer. For more information go to

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