gems, Mesoamerican art, Mesoamerican metalwork, gold, turquoise, Aztec, British Museum, masks, pre-columbian art, Oaxaca, Mexico, Yucatan, Chichen Itza, mask, turquoise skull

Xihuitl, The Eternal Blue: An Investigation into a Skull is a book and documentary film (directed by Marianne Pourtal Sourrieu) that recount the scientific and historical study of a fascinating pre-Columbian human skull entirely covered with a turquoise mosaic. This work of Mesoamerican art, often associated with the Mixtec culture, is the subject of a genuine scientific investigation aimed at uncovering its secrets.