 The most impressive examples stem from Jaina Island.It is remarkable that the Maya, who had no metal tools, created many objects from a very thick and dense material, jade (jadeite), particularly all sorts of (royal) dress elements, such as belt plaques - or celts - ear spools, pendants, and also masks.Celts (i.e., flat, celt-shaped ornaments) were sometimes engraved with a stela-like representation of the king (e.g., the Early-Classic 'Leyden Plate').