Troy weight is a system of weight measurement that is primarily used for precious metals, gemstones, and other high-value goods. It originated in the Late Middle Ages and has its roots in the Roman monetary system, with the term "troy" believed to derive from the city of Troyes in France, where many traders and merchants conducted business. The troy weight system is based on specific units: - 1 troy ounce (oz t) is equal to approximately 31.
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