A fake American gold Eagle and krugarand with perfect dimensions and weights?

Hey guys.
I did a magnet slide test on my one ounce gold american eagle bought from a bank in Taiwan and a Krugarrand 1 ounce bought from APMEX. Guess what? Not one show any resistance at all. The magnet just slided down not being slowed at all. I tried the same thing on 999 Gold bar and Maple leave and both showed some resistance on the magnet. Both the Eagle and the Krug have 90percent gold at least, why arent they show any resistance?

Both coins have legitimate weights, dimensions, And sound perfectly like gold to meunder the ping test.Really nice sounds.

If you have a gold eagle one ounce or krugarand, please try the magnet slide test on them and let us know.

 

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magnet test is unreliable. cannot be used reliably. if the diameter, thickness and weight are all correct, then you are just spinning the wheel of paranoia for no reason.

 

Pe

rhaps, but someone on the other thread told me if the magnet falls without resistance, then it is fake. I just want to make sure. The dimensions are approximately correct, i dont have one of those accurate caliber. I used a kitchem scale to weigh it and it showed 34 g, so it is pretty close. My profile picture is the coin itself. Thank you for replying.

 

You could always acid test the coins if your very concerned or just conduct a specific gravity test which is pretty easy and decent way to check if your gold is real or not. Also a magnet doesn't slide slowly down a gold coin like it does a silver coin so besides a magnet not sticking to the coin a slide test really isn't that great for gold coins.

 

Do you have an American gold eagle? If you have, could you please slide a magnet down and see you get the same result as mine? No, i cant use acid, if it is fake, i would have to return it to the bank, I still have the receipt with me. As for the specific test, gold eagle is 91 percent gold and the rest is copper and silver, I cant be bothered calculating the specific gravity for it and I don't have a good scale to do a specific gravity test. I just need to know if you guys also have the same result as me. There is another post that describes the same problem with his friend's american eagle coin and a few replies say that the eagle is fake, but it seems that these people didnt try the magnet test on the eagle at all and just answered based on their instinct.

 

If you cant be bothered to do the only test that matters...then enjoy the boat you find yourself in. youre gonna look awfully silly when you go to bring it back and your answer is "a magnet didnt slide down it properly"...

I would never, ever, ever never ever drag a magnet across one of my coins. But that is because I am a numismatist and dont believe in scratching my coins, aside from being ridiculous. You sound like the guy who accused APMEX of selling him fake silver because he didn't like the sound it rang with...

Science. Vs. Playground Methods.

 

In all of the posts on many bullion forums, they never mention the angle of the slide, the gauss rating of the magnet, the length of the slide and the mm/sec. Even magnets made from the same rare earth material will have different strength depending on the the mass and width of the magnet ( the magnetic lines that does this is dependent). Also the type of magnetism is diamagnetic and repels rather than attracts certain elements such as gold and silver. These articles will help The 2nd and 3rd shows diamagnetic levitation, so is your rare earth magnet this strong? Should be for accuracy effect.

http://en.wikipedia.org/wiki/Diamagnetism
http://www.physics.ucla.edu/marty/diamag/
http://www.physics.ucla.edu/marty/diamag/magnet.pdf

And I do agree with rysherms about scratches.

 

The magnet slides down just like one slides a magnet over a plastic, i am pretty sure you will find your silver bar or coin suspicious if the maget slides down over them with no resistance at all while other similar bars or coins show resistance. Acid tests the surface, and how do you test the specific gravity for an alloyed gold coin? And again, i have bought many silvers from APMEX, not accusing them. If a silver eagle sounds different from another silver eagle, isn't it logical to be suspicious? And no i wont look silly when I bring it back to the bank, however, i would look extremely silly if i drop an acid on it. Plus, cant get access to the acid here. Thank you for your reply though.

 

I understand and thank you for your links. But the difference is really obvious. The one on eagle shows no resistance at all. Kinda like doing the ping test when one coin pings and the other doesn't ping at all and then concluding that the ping is not accurate. The angle i did was at 45 degree, i am fine with the so called scratches, havent seen any obvious scratches yet, probably if you use a microscope, but thank you for your help.

 

The above shows a fake 1 ounceScottsdale bar that has a good weight off by 0.018 oz and good dimensions. The only thing that raises the suspicion is the magnet slide test.

 

Here is a density chart for gold alloys and other metals
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

In this video at 1:15 he does the magnet slide test on a genuine gold sovereign and you can see that the magnet just slides right off and doesn't slide slowly like it would on a silver eagle, etc.

 

Also actually, many of my second hand rounds i bought from Apmex do not have 31.1g exactly. The worst ones I had were a 30.8 g and a 31.5 g, many real silver rounds do not show exact 31.1g even if they say they are one troy ounce, especially from those private mints. I had a good scale back then in the US. And believe it or not, some local coin shops dont even meausre the dimensions, they just use a magnet and if the coin doesnt stick on the magnet and the weight is approximately one ounce, they would buy it and then resell it. I email Apmex about how they test the second hand silver or gold rounds they bought from the public, Apmex didn't reply me and I was a gold member back then. So, I went on the apmex website and chatted with the operator online, she said they dont use ultrasounds on rounds and just ignored my further question then I ended the chat. I believe Apmex sells legitimate new coins, bars, but I am not sure how they handle thousands of second hand rounds of silver and gold that they bought from the public. And I won't be surprised if they made a mistake coz you know how good those fakes are these days.

 

Ok, that video helps alot. I guess gold alloy containing copper behaves differently magnetically than a 999 pure gold. Appreciate that video. Cheers.