If you’re getting a bit tired of me waxing poetic about this black patina thing, then feel free to skip this post.
Here’s another experiment with two metals…Sterling silver and copper…and two treatments. The earrings on the left are sterling, after a bath in LOS, buffing with OOOO steel wool, and a good rubbing with a polishing cloth. The other is copper again. Found a posting on the internet about keeping the black patina on copper by just tossing into a jewelry tumbler. So I did. Some of the patina did come off, but the finish is a nice dark gun metal gray. The results with tumbling in steel shot for about 20 minutes produced a strengthened, lustrous metal finish. I’m happy.