We use troy ounce to express mass of metals like gold. Troy ounce is equal to about 31.103 476 grams.
A fine ounce is a troy ounce of 99.5% pure gold and standard ounce is a troy ounce of 22 carat gold which is 91.66% pure.
A fine ounce is a troy ounce of 99.5% pure gold and standard ounce is a troy ounce of 22 carat gold which is 91.66% pure.