Northstar Glassworks
Hyacinth
Deep opaque faux-purple that must be worked in a cool oxidizing flame; overheating causes graying and boiling.
Outcomes
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Deep opaque faux purpleWork in a cool oxidizing flame to prevent graying and boiling.
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Grayed or boiled surface from overheating or wrong flameWorking too hot or in a non-oxidizing flame causes graying and boiling — an undesirable outcome noted by the manufacturer.
Working notes
- Work in a cool oxidizing flame only — overheating causes graying and boiling.
- See the Heat Sensitive color section for additional guidance.