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 market consumer population centers. A swap is a derivative in which counterparties exchange the cash flows of one party's financial instrument for those of the other party's financial instrument. They were introduced in the 1970s. Exchange-traded commodity is a term used for commodity exchange-traded funds (which are funds) or commodity exchange-traded notes (which are notes). These track the performance of an underlying commodity index including total return indices based on a single commodity. They are similar to ETFs and traded and settled exactly like stock funds. ETCs have market maker support with guaranteed liquidity, enabling investors to easily invest in commodities.