Precious metal "precious" metal can also be determined by high demand or market value. Precious metals in bulk form are known as bullion and are traded on commodity markets. Bullion metals may be cast into ingots or minted into coins. The defining attribute of bullion is that it is valued by its mass and purity rather than by a face value as money. The level of purity varies from issue to issue. "Three nines" (99.9%) purity is common. The purest mass-produced bullion coins are in the Canadian Gold Maple Leaf series, which go up to 99.999% purity. A 100% pure bullion is
Commodity fetishism mentales, etc." (Fetishism in Love: the Psychic Life of Micro-organisms, the Intensity of Mental Images, etc., 1887), was applied to interpret commodity fetishism as types of sexually-charged economic relationships, between a person and a commodity (goods and services), as in the case of advertising, which is a commercial enterprise that ascribes human qualities (values) to a commodity, to persuade the buyer to purchase the advertised goods and services. In the 19th and in the 21st centuries, Thorstein Veblen ("The Theory of the Leisure Class: An Economic Study of Institutions", 1899) and Alain de Botton ("Status Anxiety", 2004) respectively developed the