Cone 06: Volcanic Glow is a glossy, dark grayish taupe glaze with a brown stain. It has large red crystals. Cone 6: Base glaze changes to brown/gold and breaks over texture; crystals melt and are red/blue. Enhanced mobility. Surface issues may occur. TIP: This glaze WILL move. Take care when using on vertical pieces reduce glaze thickness towards the bottom third to minimize run-off. This glaze will pinhole at three coats.