Cobalt Oxide Black Clay Containing fine white clays with

Containing fine white clays with a bentonite addition

Provides a smooth

whilst being rigid enough to maintain its shape

With its bright yellow-gold colour

Cobalt Oxide Black Clay Containing fine white clays withThe most powerful colouring oxide. This produces a deep blue or blue black colour in lead and leadless glazes and a vivid blue in alkaline glazes. It gives good colour variations when used in combination with other oxides. 1 1. 5% for a deep blue. To remove oxide mistakes or for making a design, use a pencil eraser. It won't smear like when trying to wash the oxide off. TOXIC. Please read the safety information prior to purchase and use: Safety Data