Northstar Alaskan Thunder boro glass is a black blue silver color. When worked in an oxidizing flame, NS-111 Alaskan Thunder yields bright metallic blues, greens, and purples. When worked in a neutral flame it yields bright hazy green, white, and cream colors. When worked in a heavily reducing flame NS-111 Alaskan Thunder produces a nice ash gray. It is well suited for stringer application, blown work, and sculpture. Try encasing NS-111 Alaskan Thunder with clear or NS-09 Yellow for great effects.