Northstar Glassworks
Blue Spruce
Opaque blue-green that stays clear and vibrant in an oxidizing flame; reduction produces interesting gray streaks resembling tree growth rings.
Outcomes
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Opaque blue-green with clear, vibrant colorWork in an oxidizing flame to maintain clarity and color.
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Blue-green with gray streaks resembling tree growth ringsReduce to develop gray streaks that appear as growth rings within the blue-green base.
Working notes
- Reduce only intentionally — reduction produces gray streaks rather than a clean blue-green.