The Mixtecs were highly skilled in different forms of artistic expression. They made outstanding pieces with semiprecious stones such as jade, rock crystal, opal and obsidian. These included decorative items and small figurines in the form of deities, ancestors and animals, mostly rabbits and turtles. They also created mosaics out of turquoise. They worked gold into a variety of adornments such as brooches, rings, necklaces, nose ornaments and squash-shaped plates. In wood, they made ceremonial artifacts such as masks and knives. Their pottery was primarily polychromatic and consisted mainly of three-legged vessels decorated with animals, mythological figures, or flowers and multicolored borders. Other ceramic pieces include cups and bowls with long bases finished with a serpent head painted red and white, similar in style to their murals. The most common Mixtec iconographic motifs are deities and their insignias, animal emblems (serpent, jaguar, deer, rabbit, spider, etc.), sun and moon discs, bands of stars, skulls, skeletons and figures representing natural elements such as water and fire. These types of images are frequently found in Mixtec pictographic manuscripts or codices that narrated historic events and religious themes.