Earlier in the week this story of a fake 10 Oz gold bar found in Manhattan’s jewelry district hit the web.
If you’re worried about your gold or silver, there is an easier way to spot a fake than drilling into your bars. Ultrasonic gauge thickness testing.
This TV clip shows the fake gold bar.
Frightening, but there is no need to drill into your bars.
This video demonstrates how ultrasonic thickness testing can spot a counterfeit silver bar.
And the same technology works on gold bars as well, as demonstrated here.
A quick google search tells me that a nice new ultrasonic thickness gauge will cost you somewhere between $1k-$2k with cheaper options available on ebay.