and it is said to be based on the weight of a one-time English penny. You can use a table to convert pennyweight into more familiar systems like ounces or grams, or
For example, 10 grams pure gold is equal to 0.32 troy ounces, or 0.35 ounces. Calculating the Weight of Pure Gold in Pennyweights (dwt) A pennyweight is a commonly used unit of measurement in jewelry and is denoted by “dwt”. Onetroy ouncecontains20 pennyweights, so a pennyweight is ...