... iron, quartz and mica, and when fired, turns a charactreristic red colour. However, blue and white clay is ... be incorporated into the pots as well.craft description: A : produce clayThe clay is produced using an ancient ... as they do so, until it is of a workable viscosity-a process that takes about two days. The ... The cut sides must be smooth and shiny, without a trace of air pockets. Only then can it be ...