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Thursday, November 13, 2008

Weighing Silver

In America, our system of weights for most things identifies a pound as being equal to 16 ounces. This is known as the avoirdupois system of weights.

The weight of silver is expressed in the Troy system in which a Troy pound equals 12 Troy ounces. Prices quoted for raw silver refer to Troy ounces. To avoid confusion and misunderstanding, we generally express weight in grams. Here's a conversion chart.
  • One avoirdupois ounce = 28.349523125 grams
  • One Troy ounce = 31.1034768 grams

If you are calculating the weight of silver in a sterling flatware piece, remember that sterling is only 92.5% silver content. It is difficult to calculate the weight of silver in a knife and some serving pieces because part of the piece may be made of something other than sterling, such as a stainless steel blade.

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