I have been using authentic ancient Greek and Roman coins in my jewelry for the last 30 years. Most of the pieces I put on Zibbet are silver cameos modeled off of antique plasters done in the late 1700's to early 1800's by museums in Europe. This is my AveriDesigns line. I also use modern and vintage shell, plastic and stone cameos for my models. I make molds of ancient coins, but only cast one side when doing a reproduction.