How to test dust GOLD when buying it?
Prince H asked:
If somebody wants to buy dust GOLD, how to find out 100% that this is a correct GOLD and not other polished metal?
This entry was posted
on Saturday, January 24th, 2009 at 12:00 am and is filed under Earth Sciences & Geology.
You can follow any responses to this entry through the RSS 2.0 feed.
You can leave a response, or trackback from your own site.
If somebody wants to buy dust GOLD, how to find out 100% that this is a correct GOLD and not other polished metal?
January 26th, 2009 at 4:57 pm
Magnet
Gold is not magnetic
(if your 9 ct gold ring is attracted, it can still be gold, but not pure)
January 26th, 2009 at 11:57 pm
It is important to qualify that these tests are for pure gold. Alloys will react negatively:
Gold is not effected by nitric acid. Pour a little acid on the dust. Nothing should happen.
pure gold weighs 19.3 grams / cubic centimeter.
Carefully weigh the dust in grams as accurately as possible.
To accurately measure volume, fill a pitcher ( or any container with a spout) with water to overflowing. Then catch the overflow while you pour the dust into the pitcher. Use a graduated cylinder to measure the volume of the overflow.
Divide the weight in grams by the volume in cubic centimeters. Within the accuracy of your measurements, the density should be 19.3g / cc.
Grandpa