Wednesday, April 03 2013
Weighing gold and gemstones can be a bit confusing. Miners use pennyweight and jewelers use grams. Gemstones are weighed in carats. The word "carat" comes from ancient India where carob seeds were used as small consistent weights. The word "pennyweight" comes from the old Gold Rush days when a miner would compare the weight of his gold dust against the weight of a penny. Keep in mind that a penny in 1849 was somewhat larger than it is today.
Pennyweight Conversions 1 pennyweight (dwt) = 7.776 carats 1 pennyweight (dwt) = 1.55 grams 31.1 grams = 1 troy ounce 1 pennyweight (dwt) = 24 grains 480 grains = 1 troy ounce 1 pennyweight (dwt) = 0.05 troy ounce 20 pennyweight (dwt) = 1 troy ounce 12 troy ounces = 1 troy pound Carat Conversions 1 carat = 0.20 grams 1 carat = 0.1287 pennyweight 1 carat = 0.0064 troy ounce 1 gram = 5 carats 1 pennyweight 7.776 carats 1 troy ounce = 155.5 carats     |
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