Galestro Colorobbia comes from sandy carbonate clays whose grey colour renders the Tuscan countryside unique (Sienese Crete, the Cities of Tuff ...) and the final product is a skillful mix between the geological characteristics of the raw material, the application of constant and continuous controls in the working process, a moulding and a firing realized with masterly skill. Besides Galestro, Colorobbia also produces other types of bodies whose colour is obtained by the utilization of oxides which do not however alter the characteristics of frost resistance.