Copper ore sometimes used ornamentally (9)
I believe the answer is:
malachite
(Other definitions for malachite that I've seen before include "hydrated copper carbonate" , "Bright green mineral" , "ornamental stone" , "source of copper" .)
I believe the answer is:
malachite
(Other definitions for malachite that I've seen before include "hydrated copper carbonate" , "Bright green mineral" , "ornamental stone" , "source of copper" .)