Copper at times is listed like a precious metallic mainly because it is Employed in forex and jewelry, but copper is plentiful and readily oxidizes in moist air, so It isn't specially widespread to view it regarded as "precious." This section needs further citations for verification. Be sure to assistance https://rylangoxfi.madmouseblog.com/19043462/the-smart-trick-of-futures-contracts-that-nobody-is-discussing