Tumbaga is the name given by Spanish Conquistadors for a non-specific alloy of gold and copper, and metals composed of these elements. Pieces made of tumbaga were widely found in pre-Columbian Mesoamerica in North America and South America.
The term is a borrowing from the Tagalog tumbaga. This came from Malay tembaga, meaning 'copper' or 'brass'.[1] It has also been spelled tumbago in literature.[2]