This cross was originally quite large and carved in stone. I found it in Sonora, Mexico, drew the design, and then reduced it to a suitable size to be worn.
The design is intriguing mix of Aztec imagry combined with a Christian Cross. The icons and liturgy of New World Catholicism was often this sort of mixed bag. Generally this happened because early missionaries perceived ways in which native beliefs and images could be blended with the new faith to make it easier to explain and accept.