617103 Berry Gumbolt Frit 4oz Northstar Glass COE 33 Borosilicate

Northstar Berry Gumbolt is a fully opaque saturated dark blue. It is well suited for stringer application and blown work. It is not susceptible to reduction and is not flame sensitive. For best results, keep it in a neutral flame. It is a great backing color for such colors as Northstar Irrid and Northstar Turquesa, and goes well with Northstar Canary.  

CAUTION: AVOID EXPOSURE TO GLASS DUST. ALWAYS USE A DUST MASK AND EXHAUST HOOD WHEN HANDLING FRIT AND POWDERS.