Text: Tungsten, which has the exact same DENSITY as Gold, can be coated with a 15 micron coating of Gold and pass as a Gold Bar, under the scrutiny of X-Ray Fluorescence; which can test to 10 microns deep only! Gold: 19.3 g/cm^3, $8730/kg Tungsten: 19.25 g/cm^3, $110/kg

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