What is Cobalt used for?
1. cups
2. vaces
3. plates
4. Pigment in glass
5. its a blue color
6. blue metal
7. mines out of copper or nickel
8. a critical energy to clean metal
2. vaces
3. plates
4. Pigment in glass
5. its a blue color
6. blue metal
7. mines out of copper or nickel
8. a critical energy to clean metal