Weight of Stones

The weight of a stone is important in planning your piece. The weight of a gemstone may be described in ounces, carats or by other units of measure. Here is a conversion chart to help you make sense of all of these units of measure: 1 carat (ct) is equal to 1/5 of a gram (g), 28.3 grams (g) is equal to 1 dry ounce (oz), 16 dry ounces (oz) is equal to 1 dry pound (lb) which is equal to 454 grams (g), 1 kilogram is equal to 1000 grams (g) which is equal to 2.2 pounds (lbs) which is equal to 5000 carats (ct).