Since the Neolithic era, artisans in East Asia have coated bowls, cups, boxes, baskets, and other utilitarian objects with a natural polymer distilled from the sap of the Rhus verniciflua, known as the lacquer tree. Lacquerware was, and still is, prized for its sheen--a lustrous beauty that artists learned to accentuate over the centuries with inlaid gold, silver, mother-of-pearl, and other precious materials. This tradition has undergone challenges...