In this video I will teach how to make liver of sulfur and cover with a patina of copper jewelry.
1 part baking soda and 1 part of sulfur mix in a ceramic crucible. Heated on the fire until brown. All the while thoroughly. If you see a fire - blow it.
Important! Work must necessarily a respirator, goggles and gloves.
When the powder is cooled down - fill it with water and store in a bottle with a tight stopper, without air.
Pour part of the solution to the water and soak there jewelry. When it goes dark, remove the excess with a sponge patina and polishing paste.
Rinse brooch in dish detergent and cover with varnish to metal. :)