Some coin rings are so cool, that you want to really bring out the markings and make them as visible as possible. And this my friend, is one easy, reliable way to do it. Works well with both silver and copper coin rings. This isn't paint, or die, and we're not adding a colored coating. Liver of sulfur changes the color of the surface metal by oxidation. A popular oxidizing technique used to color metals.

How Liver of Sulfur works http://www.hodgepodgerie.com/liver-of...

Liver of Sulfer http://www.amazon.com/Extended-Liver-...

How to Make a Coin Ring    • Make Double Sided Rings out of Coins ...