Glass act: the kaleidoscopic art of enamelling - Why young jewellers are reviving this ancient techniqueFor Victoire de Castellane, creative director at Dior Joaillerie, ... however prefers cold enamelling which employs epoxy resin instead of glass.
10 Coffee Enamel Pins to Wear or Display for Coffee Lovers
If you’re here, you’re likely a coffee lover looking for a way to express your love of coffee through a coffee enamel pin.
The short answer is soft enamel has recessed enamel, while hard enamel is polished flat. Both are made from the same mold and the detail achieved is the same - they simply have different looks.