Gold bars and silver bullion are being counterfeited to density and XRF. Ultrasound provides the technology to conclusively detect bullion fraud.
- https://testyourgold.com/a-guide-to-testing-gold-silver-and-fakes/
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Gold bars and silver bullion are being counterfeited to density and XRF. Ultrasound provides the technology to conclusively detect bullion fraud.
- Australia