It was not until the 16th century that gloves reached their greatest elaboration; however, when Queen Elizabeth I set the fashion for wearing them richly embroidered and jewelled, and for putting them on and taking them off during audiences, to draw attention to her beautiful hands. The 1592 "Ditchley" portrait of her features her holding leather gloves in her left hand. In Paris, the "gantiers" became "gantiers parfumeurs", for the scented oils, musk, ambergris and civet, that perfumed leather gloves, but their trade, which was an introduction at the court of Catherine de Medici, was not specifically recognised until 1656, in a royal "brevet". Makers of knitted gloves, which did not retain perfume and had less social cachet, were organised in a separate guild, of "bonnetiers" who might knit silk as well as wool. Such workers were already organised in the fourteenth century. Knitted gloves were a refined handiwork that required five years of apprenticeship; defective work was subject to confiscation and burning. In the 17th century, gloves made of soft chicken skin became fashionable. The craze for gloves called "limericks" took hold. This particular fad was the product of a manufacturer in Limerick, Ireland, who fashioned the gloves from the skin of unborn calves.