This is the only metal which possesses a distinctly red colour, and of the ordinary manufacturing metals is, when pure, by far the toughest. It is most durable and an excellent conductor of heat; and on account of the facility with which it can be tinned is largely used in the making of the better-class cooking utensil.

Native copper is sometimes discovered in large masses, but the bulk of the copper of commerce is extracted from ores, cast into ingots and rolled into sheets or bars.