PC-56 Ancient Copper, by Amaco

Inspired by classic tomato red reduction glazes, Ancient Copper is an iridescent, iron red glaze that breaks dark brown over texture and pools dark yellow-green, giving it a weathered appearance.

Ancient Copper is a satin at cone 5, and more glossy with metallic floats at cone 6. Avoid slow-cooling cycles when firing. 

Food Safe Glaze.