Troy Ounce vs Ounce Price of Gold Per Ounce
The troy ounce (480 grains) is heavier than the avoirdupois ounce ( grains). A grain is milligrams (mg); therefore one troy ounce is grams (g). This measures out to be about 10 percent more than the avoirdupois ounce, which is g. 1 troy ounce = ounces .