Reviving historic glazing techniques through innovative print technology As the revival of studio pottery continues, Raku celebrates the heritage of traditional glazing techniques. It is a stylish collection of plates and bowls in Topaz Blue, Quartz Black, Garnet Orange, Agate Grey, Jade Green and Quartz Pink. With a range of impressive technical attributes, Raku is designed to withstand the rigours of a back of house hospitality environment.