gold bar?

well i took it to fresno coin and the looked at it and said it wasnt gold be he said he didnt know what it was.

 

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get a testing kit for gods sake!

 

i dont have 40$ for a kit lol

 

lol oh ok. maybe you can do the gold displacement test, I'm sure someone can pull up a link for you to try it

 

okay i could try that

 

Take it to a good jewler.

 

I agree! Better yet, see if you can find an Assayer that might test the Bar cheap or for free! Considering that you are young, a really nice Assayer might just want to help out at no charge. I know that the chances are low that an Assayer would test it for free but you never know unless you ask. In any case, you need someone that can test the Bar, no matter what purity the Gold is in it (if in fact it has Gold in it). An Assayer can tell you exactly what the Bar contains!


Frank

 

I have to say I am really interested in how this all turns out. Please keep us updated!! :thumb:

 

i was wondering if i put it in baking soda and vinegar and its brass will it turn green?

 

Please be joking, please. Haste makes waste and you still wouldn't be absolutely sure.

 

Please don't do that. Find a better jeweler or do a water displacement test. That's the best route.

 

oops to late i had it in there for bout 30 mins and all it did waz make it shinier

 

Oh God. :computer::desk::headbang::vanish:

 

If you know any college or high school science teacher they can do a specific gravity/density test. SInce gold has a density of 19.3 gr/cc, a 200 gram bar of 100% gold should have a volume of 10.52 cubic centimeters or 10.52 ml of water displacement. 75% gold (18 karat) should be about 12.6 ml displacement. If you have a syringe ( no needle needed,maybe from animal supply) that accurately measures ml, I can tell you how to do yourself, but chem lab equipment will be better.

Notice from the chart below, 100% copper would be almost twice the size at 22.2 ml displacement.

Jim


MetalDensity
Gold19.3
Silver10.5
Platinum21.4
Palladium12.0
Copper9.0
9ct10.9 to 12.7
14ct12.9 to 14.6
18ct Yellow15.2 to 15.9
18ct White14.7 to 16.9
22ct17.7 to 17.8
Sterling Silver10.2 to 10.3 950
Platinum20.1

 

There we go, I was waiting for someone to explain that test. Thanks desert

 

ill look tomorrow to see if i have any measuring things cuz i used to have a chem set

 

Personally, I think you're nuts to try to test this bar yourself and perhaps damage and ruin any antique value it might possess as an artifact. If you don't have the resources or contacts to get it assayed professionally, put it in a safe place and wait until you do. Don't let the frenzy of the crowd rush you into making an error.

 

He has now cut it with a saw. He Posted on another forum
There goes any antique value:desk::desk::desk:


Timmy