Copper DanceFlashes of copper brighten this flashy canter. This is a very successful example of this glaze (called Copper Sand). It can range in colour from blue and greens to bright copper. Title: Copper Dance Medium: Raku fired ceramic Size: 7. 5(H) x 6. 5(L) in What is raku? Glowing red hot ceramic pieces are taken from the kiln and placed in a material that catches fire, such as sawdust. They are then enclosed in a container with the flames. The lack of