I bought this at an Estate Sale.  The owner worked for GE and had a passion for Archaeology.  He often traveled to China, Africia and Latin America and participated in Excavations.  Please note, I am not an expert and I do my best to explain what I have.  His wife didn't know much about what he collected so I research what I can.   I know that he often bought items while traveling but also was involved in excavations.   I always welcome any information on items that I sell.  I appreciate getting Educated.  Google is helpful but not definitive and often useless.   Here is one of his fines:

Here is what is believed to be a Mayan Celt Axe Head.  It has a greenish tone to it and where it is polished it looks like Jade but I could be wrong so look and decide for yourself.  Shipping $10