Karats
Grams
DWT
Ounces
10k
 18.5718.57 28.8828.88 577.55577.55
14k
 25.9625.96 40.3740.37 807.46807.46
16k
 29.7029.70 46.1946.19 923.80923.80
18k
 33.4033.40 51.9451.94 1,038.761,038.76
21k
 38.9638.96 60.5960.59 1,211.881,211.88
22k
 40.5240.52 63.0263.02 1,260.361,260.36
24k
 44.4844.48 69.1869.18 1,383.621,383.62
Platinum .900
 20.5520.55 31.9631.96 639.30639.30
Platinum .950
 21.7021.70 33.7433.74 674.82674.82
Platinum .999
 22.8122.81 35.4835.48 709.62709.62
Sterling Silver .925
 0.490.49 0.750.75 15.1015.10