Cloisonne: Different colors of powdered glass are inlaid between partitions in the die struck copper base and fired at 1500o. The pins are then buffed and polished to a fine finish and metal plated.
Soft Enamel: Designs are etched into the base metal then hand painted and fired at 400o. Each pin is polished and plated.
Photo Enamel pins are covered with a clear epoxy dome.