For Gorgeous Metallic Luster Add some color and sparkle to your glass projects! Fuse, enamel and flamework with Mica powders. Mix powder with Klyr-Fire and airbrush onto glass, then fire. Apply multiple thin coats and fire in kiln to about 1380 degrees Fahrenheit. Roll your glass bead in Mica to apply a metallic shine. Works great with all glass COEs.