The Navajo have been creating jewelry since the late 17th century, taught by Mexican artists. This symbol in particular was believed to have been adopted by the Spanish in the Mexican occupation- and THEY had seen it when the Moors occupied Spain. The Moors, who were from North Africa, used the symbol as good luck- and adorned their horses with it when going into battle.
SO: from North Africa, to Spain, to Mexico, to the United States- the symbol of the Naja has prevailed. Fascinating.
Thank you, darling Sophanista.