The piece, which has already been fired twice at 960° C, undergoes a third firing at approximately 800° C, this time without oxygen. The smoke from the combustion that results is absorbed by the enamels which are still in their melted state and, in a redox reaction, the mineral salts present in the colours are transformed producing superb effects of lustre and iridescence due to reflection of light. The sober hues, precious and refined while respecting the formal rigour which is the hallmark of all our ceramic artwork, do not interfere with the simplicity of the forms which stand out starkly in space with their sharp, austere contours.