How Much is an Ounce: How to Calculate Price Per Ounce Converting Troy to Other Systems Troy weight may be commonly used for precious metals, but it's not a familiar system for most people. If you find a weight given in terms of Troy ounces, pennyweight and other Troy units, you can ...
After you’ve weighed your gold jewelry, you need to apply the purity percentage you’ve already calculated for each item to its weight in order to figure out how much of it is pure gold. Calculating the Weight of Pure Gold in Grams Simply multiply the weight of your jewelry in grams by...