Onyx is a translucent, coal black glaze that boasts a glossy, smooth surface after firing. 100% mixable and true to their unfired color, the Teacher’s Palette Light® glazes are a must-have for any classroom or studio. These glazes look especially beautiful over carved and textured surfaces. In need of a fun project? Try brushing one layer of any of the Teacher’s Palette Light colors over a design created with one of our Velvet Underglazes.