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Copper, Lead, Silver
See Bullseye Reactive Potential charts for more information
Color variations common from pastel to vibrant yellow.
Lighter coloration matures and becomes consistent to target upon firing. A sulfur glass. May react with lead and copper glasses to create dark interface (lead sulfide, copper sulfide).
This style is not suitable for kilncasting because it can become incompatible when held at high temperatures for an extended period.