From what I have read, liver of sulfur turns copper dark or black. I want to take hardened copper and give it the blue-green look it might have developed after being out to sea. Is there a product you can recommend?
You may be referring to a verde gris patina that develops naturally with copper metal, moisture and sunlight. You can simulate this effect by leaving the metal outdoors for long periods of time. You can also use chemical applications that offer a green patina when applied. You may still need to leave this treatment in the sun or under a natural daylight lamp.
A simpler and faster method is to use Gilders Paste® which you can apply as you would a paint with a brush or sponge, stroking, dappling or texturing the metal with color. One of the colors in the Gilders Paste range is a green patina. You can then seal the paste with a clear coat of Mona Lisa™ Metal Leaf™ top coat sealant. This finish will wear over time and may need to be reapplied. Follow package directions for best results.
- Sandra Lupo, Metalsmith, Jewelry Instructor and Swarovski crystal Ambassador