If the work done cold, the finishing, the engraving, the polishing, are more the affair of a single individual, it is not the same for work under heat. Masses of molten crystal of up to 20 kg sometimes have to be handled. This is where teams need to have maximum concentration. In the hot workshop, there is a constant ballet of workers, each with a well-defined task. Not everyone can handle a material melting at 2,300°F (1,200°C). At Lalique, the training of the crystal workers is carried out internally, which allows the transmission of the company’s specific know-how.