Metal Weight Comparison Chart

Mental Weight Comparison Chart

To find the weight of an article in a metal different from that in which it is now made.

  1. Find the present metal in the first vertical column.
  2. Multiply the present weight by the factor in the same horizontal row under the new metal.
    Example: A sterling silver ring weight 8 grams, what will weight in 14kt.
  3. Along the horizontal row marked Stg in the first column under the heading 14kt. We find 1.25 x 8 = 10grams, weight in 14kt.
Pt. F.G. 22kt. 18kt. 14kt. 10kt. 9kt. F.S. Stg
Pt. 1 0.9 0.82 0.7 0.6 0.53 0.53 0.49 0.48
F.G. 1.11 1 0.91 0.78 0.67 0.59 0.58 0.54 0.54
22kt. 1.22 1.1 1 0.86 0.73 0.65 0.65 0.6 0.59
18kt. 1.42 1.28 1.16 1 0.85 0.76 0.75 0.69 0.68
14kt. 1.66 1.5 1.36 1.17 1 0.89 0.88 0.81 0.8
10kt. 1.88 1.69 1.54 1.32 1.13 1 0.99 0.92 0.9
9kt. 1.9 1.71 1.56 1.34 1.14 1.01 1 0.93 0.92
F.S. 2.04 1.84 1.68 1.44 1.23 1.09 1.08 1 0.99
Stg 2.07 1.87 1.7 1.46 1.25 1.11 1.09 1.01 1