The troy ounce (ozt) is a unit of imperial measure. In the present day it is most commonly used to gauge the weight and therefore the price of precious metals. One troy ounce is equivalent to 31.1034768 grams. There are 32.1507466 troy oz in 1 kg.
The troy ounce is part of the troy weights system derived from the Roman monetary system. The Romans used bronze bars of varying weights as currency. An aes grave weighed equal to 1 pound. One twelfth of an aes grave was called an uncia, or in English an "ounce". Later standardization would change the ounce to 1/16 of a pound (the avoirdupois ounce), but the troy ounce, which is 1/12 of a troy pound (note that a troy pound is lighter than an avoirdupois pound), has been retained for the measure of precious metals. At 480 grains, the troy ounce is heavier than the avoirdupois ounce, which weighs 437.5 grains. A grain is 64.7989 milligrams (mg); hence one troy ounce is 31.1034768 grams (g) (exact by definition), about 10 percent more than the avoirdupois ounce, which is 28.349523125 g (exact).12
To maintain purity standards and common measures across time, the troy ounce was retained over the avoirdupois ounce in the weighing and pricing of gold, platinum, silver and gunpowder. Likewise, the grain, identical in both the troy and avoirdupois systems, is still used to measure arrow and arrowhead weights in archery along with bullets and powder weights in ballistics. The troy ounce and grain were also common to the apothecaries' system long used in medicine, but have been largely replaced by milligrams.3
See also Tola (unit) English unit Imperial unit United States customary units References ^ "Troy Ounce". Troy Ounce: What is a Troy Ounce?. http://www.troy-ounce.com/. Retrieved 2009-08-31. ^ "Statutory Instrument 1994 No. 2867: The Units of Measurement Regulations 1994". http://www.opsi.gov.uk/si/si1994/uksi_19942867_en_1. Retrieved 2010-01-10. ^ "Troy Ounce". WordNet 3.0, Dictionary.com. Princeton University. http://dictionary.reference.com/browse/troy%20ounce. Retrieved 2008-01-10.Important! - A Troy Ounce is not the same as an Avoirdupois Ounce! Make sure you know your facts before buying or selling gold and silver!
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This week, Nymex crude fell 57 cents per barrel, or 0.76% to $74.60, Nymex natural gas rose 23.4 cents per million BTUs, or 6.32% to $3.939, Comex gold gained $13.60 per troy ounce, or 1.10% to $1249.20 and Comex copper gained 13.05 cents a pound, or 3.88% to $3.4935.
Tables of the Value of Gold and Silver Per Ounce Troy: At Different Degrees of Fineness : With Other Tables Which Will Be Found Useful to Bankers, Assayers, ... Dealers in Bullion and Ores (Latin Edition) (2010 Reprint) HP Publishing
Troy Ounce A unit of measure for weight that dates back to the Middle Ages. Originally used in Troyes, France, the troy ounce was used when dealing
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Nymex crude gained $1.11 per barrel, or 1.50% to $75.02. Comex gold gained $5.20 per troy ounce, or 0.42% to $1251.50.
Tables showing the value of silver and gold, per ounce Troy, at different degrees of fineness Nabu Press
Conversions to and from Troy Ounces to other Weight units including Kilograms, Grams, Pounds and Ounces
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The Bangko Sentral ng Pilipinas (BSP), for the first time this year, incurred $334 million revaluation losses in its gold holdings in July due to a decline in the prices of international gold. The BSP Department of Economic Statistics, in a report to the Monetary Board, said revaluation gains which slid to $123 million in June from May’s $200 million, were also wiped out in July. Gold ...

Tables of the Value of Gold and Silver Per Ounce Troy: At Different Degrees of Fineness : With Other Tables Which Will Be Found Useful to Bankers, Assayers, ... Dealers in Bullion and Ores (Latin Edition) Nabu Press
It is always weighed in grams, 31.1g being 1 Troy ounce. The only time ounces are mentioned is usually as a marketing tool for the public. ...
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The US dollar slid on Friday after a government report on jobs was not as bad as many market watchers had feared.
Tables of the value of gold and silver per ounce troy: At different degrees of fineness : with other tables which will be found useful to bankers, assayers, ... merchants, dealers in bullion and ores A.J. Leary
1 troy ounce =20 pennyweights =31.103 grams 1 pennyweight =.05 troy ounce =1.555 grams 1 gram =.03215 troy ounce =.643 pennyweight 1 kilo =32.15 ounces ...
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[AAP] - The US dollar slid on Friday after a government report on jobs was not as bad as many market watchers had feared, helping assuage fears of another downturn in the US.The better-than-expected jobs report ...
These new 999 fine silver rounds were recently minted using the highest quality standards They will be shipped in sturdy plastic tube holders

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If some one lists an item by weight and they say ounces is this troy ounce. ... If some one lists an item by weight and they say "ounces" is this troy ounce. ...
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For many, especially adults, it's a cause for celebration. For others, especially children, it can be exciting or anxiety-ridden or a combination thereof. We're talking about the first day of school, an event about to happen everywhere just after Labor Day.
The precious metals markets are very volatile and thus have a high degree of risk We do not offer advice on ownership of
Tables showing the value of silver and gold, per ounce Troy, at different degrees of fineness [San Francisco
Troy Ounce Coin - 65 results like the Highland Mint Yankee Stadium Final Season 1 Troy Ounce 24kt Pure Gold Commemorative Coin, Highland Mint New York ...
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Decimal tables used at the Bank of England for reducing the gross weight of gold and silver to standard according to the assay reports: To which is prefixed ... ounce as the standard or unit of Troy weight Wilson
Troy Ounce Scales - 11 results like the WeighMax 100 X 0.01 gram Digital Pocket Scale Silver, WeighMax 150 x 0.1 gram Digital Pocket Scale Black, WeighMax ...
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Capping off its best pre-Labor Day week in 20 years, the Dow thundered 128 points higher on Friday as the bulls cheered August’s less-awful-than-expected jobs report and waved off concerns stemming from a gloomy service-sector index.
Nymex crude for October gained $1.99 per barrel, or 2.77% to $73.91. Comex gold for September delivery declined $2.00 per troy ounce, or 0.16%, to $1246.30.
Submitted by Steven William Hager on February 18 2007 7 26am Troy is a 12 x 12 hardwood wallgraphic created from 11 different exotic hardwoods highlighted by a one troy ounce of 999 pure silver coin It took 11 hours to create and will be
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