Rat with a Ball of Yarn is another work in which the master craftspeople of Olmart House have turned to an animal that, according to ancient oriental beliefs, symbolizes happiness and luck. The ball of yarn with which the figure of the rat is combined has always been associated with home warmth and comfort. The rat is made of mammoth ivory, her eyes of garnets. The yarn ball, into which have been inserted pearl-tipped gold needles, is carved of boxwood. Thanks to the refinement with which the fibers of the yarn have been elaborated, as well as to the tinting of the surface of the yarn ball, the whole ensemble looks remarkably lifelike. It rests atop an ivory stand.