Cambodian traditional lacquerware reached its peak between the 12th and 16th centuries. Some examples of these wares have survived in the form of gilded Buddha images and betel boxes in the shape of elephants, pumpkins, and others. The traditional colours of Cambodian lacquerware were black, from burnt wood, red, from mercury, and yellow, from arsenic. These three colours represented the underworld (black), the earth (red) and the celestial realm (yellow or gold). Some Angkorian stonework shows traces of pigment dating from the 15th or 16th centuries.