Troy Weight is a system of measurement traditionally used for precious metals, gemstones, and other commodities. It originated in the 14th century and is still in use today, particularly in the trade of gold and silver. The basic unit of Troy Weight is the troy ounce, which is approximately 31.1 grams, and there are 12 troy ounces in a troy pound. Unlike the more common avoirdupois system, which is used for most other goods, Troy Weight has its own unique measurements. This system helps ensure consistency and accuracy in the buying and selling of valuable items, making it essential for jewelers and traders in the precious metals market.