The level of detail, executed on such a fine scale, is really amazing. You can also see evidence of the painstaking work necessary to refine the technique; there is some crazing of the enamel visible in the lower center of the image. Crazing, cracking, and bubbling can occur easily with even small variations in temperature, humidity, and length of firing, and since each design has its own unique properties – especially in the case of blanc de Limoges, in which the thickness of the enamel surface varies – each dial requires its own unique approach to the multiple firings necessary to complete a dial.