Northstar's Borocolour Stabilized Blue Spruce NS-79

Price/g
Rod~40g
Order quantity: > 200 g
A great opaque blue/green. Work in an oxidizing flame to maintain clarity. In reduction, you will get interesting grey streaks that look like tree rings, and regular steel-blue streaks on the surface of the glass. If kept oxidized, Blue Spruce remains pure, providing a fully saturated blue-green opaque color for stringers and blown work.