Tumbaga
The origins of the word ‘tumbaga’ are obscure and complex, but the general consensus seems to indicate the word is a Malay word that means ‘copper, brass.’ This is a little misleading, because tumbaga is actually a mixture of copper and gold. (Cesium is the only other ‘colored’ metallic element – all other metallic elements are achromatic, greys and whites.) Today, the word is typically used to describe materials from pre-Columbian Central and [...] Click here to continue reading.