Northstar´s Borocolour Rod Blue Spruce NS-79

Northstar´s Borocolour Rod Blue Spruce NS-79
Price/g
Rod~40g
Order quantity: > 200 g
A great opaque blue/green. Work in an oxidizing flame to keep the clarity. Reduce for interesting gray streaks that appear to be growth rings of a tree, will develop regular steely blue striations on the surface of the glass. Reduction develops these striations or rings. If kept oxidized, Blue Spruce will remain pure and offers a fully saturated blue-green opaque for stringers and blown work.