A Jewelry Artists Guide to Liver of Sulfur Patinas & Finishes

Liver of sulfur is a chemical compound used in metalworking to create antique-looking patinas on silver and copper bearing alloys such as brass, bronze and copper. Liver of sulfur is available in dry lump-form, in liquid pre-mixed form and in a gel form by Cool Tools called Patina Gel.

Liver of sulfur is easy to use and requires no special equipment…a couple of plastic bowls, some water, baking soda, gloves, and a polishing cloth are all that are needed to get started. In this article you will find recipes for some basic patinas and finishing instructions for various metals so you can get the look you are after. We also have an online video called “Liver of Sulfur Patinas for Silver, Brass, Bronze and Copper” where you can watch the process and learn some additional tips!

The patina process is very simple. You start by mixing up the liver of sulfur with water, then simply dip, soak or paint the solution onto your metal. The solution reacts with the metal and results in either a colorful or darkened patina over the entire surface of the metal. Usually, color is wanted only in recessed areas and not on raised surfaces, so those areas are usually polished, leaving the patina only where desired.

If you have never used liver of sulfur before, the first thing you need to know is that it stinks. Liver of sulfur smells like rotten eggs, so you’ll need to work in a well-ventilated area when using the product. The smell is unpleasant, but not harmful when used properly.

When using with silver and silver alloys, colorful patinas can be achieved, and when the temperature of the water and care in the application is taken, the colors can be predicted and controlled.

Download A Jewelry Artists Guide to Liver of Sulfur Patinas & Finishes