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Weight Conversions:

5 carats = 1 gram
28.349 grams = 1 avoirdupois (common) ounce
453.584 grams = 1 avoirdupois (common) pound
 
31.103 grams = 1 troy ounce
12 troy ounces = 1 troy pound
373 grams = 1 troy pound
20 pennyweights = 1 troy ounce

Gemstone Properties    Faceting How-to   
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