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  #1  
Old 11-29-2010, 11:10 PM
Unregistered BLUEBOY66
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Arrow How to convert grams 90% gold to ounces 99% gold

As used in the jewelry or coin world --

A Troy ounce of 100% gold [ 24-carat ]
EQUALS

How many grams ???

For some reason I have the idea
that it is about 31+ grams? [ 31.103 ]

Or.... does the use of "Troy" only apply to Silver?

How do the conversion calculations proceed [ show your work! ] to get --

FROM: 1.672 grams of 90% gold [0.900 ]

TO: being equal to 0.0484 ounces of 0.999 gold? [ pure or 24K gold ]

[ I was told that 0.0484 is the correct answer. Is that true? ]

Thanks, Mark Cornell
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  #2  
Old 11-30-2010, 03:18 AM
JohnS JohnS is offline
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Default Re: How to convert grams 90% gold to ounces 99% gold

Quote:
Originally Posted by Unregistered BLUEBOY66 View Post
As used in the jewelry or coin world --

A Troy ounce of 100% gold [ 24-carat ]
EQUALS

How many grams ???

For some reason I have the idea
that it is about 31+ grams? [ 31.103 ]

Or.... does the use of "Troy" only apply to Silver?

How do the conversion calculations proceed [ show your work! ] to get --

FROM: 1.672 grams of 90% gold [0.900 ]

TO: being equal to 0.0484 ounces of 0.999 gold? [ pure or 24K gold ]

[ I was told that 0.0484 is the correct answer. Is that true? ]

Thanks, Mark Cornell
The troy ounce is defined as 31.103 4807 g, exactly

The 1.672 g is 1.5048 g gold, 0.1672 g something else (multiply by 90% and 10%

1.5048g/0.999 = 1.5063 g of 0.999 gold

1.5063 g/31.103 4807 g/tr oz = 0.04843 tr oz
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