Georgie’s GLW Crackle Series glazes are a group of translucent colors formulated to crackle when fired. Colors will be darker where thick and lighter where thin and the clay color may show through. Thicker applications may run. All are independently certified Non-Toxic. However, they are not Dinnerware Safe because of their crackled surfaces. After firing, brush surface with India Ink and wipe back to accent the crackled patterns. Apply to Cone 04 bisque and fire to Cone 5.