Karat (purity) in the context of "Canadian Gold Maple Leaf"

The Canadian Gold Maple Leaf (GML; French: Feuille d'érable en or canadienne) is a gold bullion coin that is issued annually by the Government of Canada. It is produced by the Royal Canadian Mint.

The Gold Maple Leaf is legal tender with a face value of 50 Canadian dollars. The market value of the metal varies, depending on the spot price of gold. Having a .9999 millesimal fineness (24 karats), in some cases .99999, the coin is among the purest official bullion coins worldwide. The standard version has a weight of minimum 1 troy ounce (31.1 grams). Other sizes and denominations include: 1 gram, 1⁄25 oz. ($0.50), 1⁄20 oz. ($1), 1⁄10 oz. ($5), 1⁄4 oz. ($10) and 1⁄2 oz. ($20).