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<p>[QUOTE=&quot;-jeffB, post: 26464677, member: 27832&quot;]No, it won&#039;t, in this context. Gold blocks X-rays too effectively. An XRF gun can only give a reading on the 10-15 microns of a high-gold alloy. It&#039;ll pick up if the piece is just gold-washed or very thinly plated, but not if it&#039;s a tungsten core wrapped in a substantial fraction of a millimeter of gold.</p><p><br /></p><p>(As I understand it, tungsten-core fakes wrap the tungsten with enough gold to accept the struck design, because tungsten is too hard and brittle to strike itself.)[/QUOTE]</p><p><br /></p>

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