Fineness

The fineness of a precious metal refers to the ratio by weight of the primary metal to any added base metals or impurities. Many precious metals are used in the form of alloys. Other metals are added to increase hardness, to make the metal more practical for use in such items as coins and jewelry, or to decrease the cost of the alloy. For example, copper is added to the precious metal silver to make a more durable alloy for use in coins, housewares and jewelry. Coin silver, which was used for making silver coins in the past, contains 90% silver and 10% copper, by mass. Sterling silver contains 92.5% silver and 7.5%, by mass, of other metals, usually copper.

Various ways of expressing fineness have been used and two remain in common use: millesimal fineness expressed in units of parts per 1,000 and karats used only for gold. Karats measure the parts per 24, so that 18 karat = 18/24 = 75% and 24 karat gold is considered 100% gold.

Millesimal fineness

Millesimal fineness is a system of denoting the purity of platinum, gold and silver alloys by parts per thousand of pure metal by mass in the alloy. For example, an alloy containing 75% gold is denoted as "750". Many European countries use decimal hallmark stamps (i.e. '585', '750', etc.) rather than '14K', '18K', etc., which is used in the United Kingdom and United States.

Fine Gold, California

Fine Gold (formerly, Finegold and Gold) (Mono: moohnih ) is an unincorporated community in Madera County, California. It is located 6.5 miles (10 km) west-southwest of North Fork, at an elevation of 1352 feet (412 m).

A post office operated at Fine Gold from 1881 to 1882. When the town of Gold was established in 1894, the townsfolk moved there.

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Fine Gold (film)

Fine Gold (Spanish: Oro Fino) is a 1989 Spanish drama film directed by José Antonio de la Loma and starring Simón Andreu, Stewart Granger and Lloyd Bochner. It depicts the ongoing feud between two winemaking families.

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