The crystal skulls are a number of human skull models fashioned from blocks of clear or milky quartz crystal rock, claimed to be pre-Columbian Mesoamerican artifacts by their alleged finders. However, none of the specimens made available for scientific study were authenticated as pre-Columbian in origin, and in the opinion of the contemporary mainstream scientific community they were manufactured in the mid-19th century or later, almost certainly in Europe.

Worthersee got me trapped in this wikihole this morning. A few links later I was reading about aboriginal activism in Canada. Have fun...