Cobalt is found only in chemically combined forms. The distinctive color, cobalt blue, is a compound of Cobalt, Aluminum and Oxygen. Like many discoveries, the Chinese have the earliest know uses of cobalt. Examples have been found in Tutankhamen’s tomb about 1350 BC, in Persian glass and jewelry and even back to the bronze age about 5000 years before present.

In the body, cobalt is an important micronutrient used in a coenzyme, B₁₂. Also cobalt is important in blood formation and in the nervous system. Bacteria, fungi and algae also use cobalt in their metabolisms. On average, there is one milligram of cobalt in an adult body.

Cobalt Scale

Cobalt Sound Sketch