This Eggplant cone 6 glaze, from the Archie's Series, breaks from matte purple to glossy green, and develops blue crystals when it cools slowly. It can get runny, especially when extra thick or hot. These glazes can be challenging to use, but they reward skill with some of the most beautiful finishes available. They flow and interact with other colors dramatically, creating fantastic effects unlike anything else possible in an electric kiln. They're also strongly affected by slow-cooling.