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<p>[QUOTE=&quot;Miscstuff, post: 266665, member: 1331&quot;]There is a cheaper (than X-ref) method of determining if something is solid silver. It&#039;s called a &quot;precious metal verifier&quot; and it measures the conductance of the material down to a depth of several millimeters. If you are buying a lot of gold and silver in the field it could be worth the $1400 or so. Being a tech I was tempted to build a custom one but it was too much engineering effort for so little return as I&#039;m not into the silver/gold game. You can find some more info here ...</p><p><a href="http://www.sigmametalytics.com/" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.sigmametalytics.com/" rel="nofollow">http://www.sigmametalytics.com/</a></p><p><a href="https://www.silverbullion.com.sg/Articles/Detail/A-new-addition-to-testing---Electrical-Conduc/960" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.silverbullion.com.sg/Articles/Detail/A-new-addition-to-testing---Electrical-Conduc/960" rel="nofollow">https://www.silverbullion.com.sg/Articles/Detail/A-new-addition-to-testing---Electrical-Conduc/960</a></p><p><br /></p><p>Cheers</p><p>Stephen[/QUOTE]</p><p><br /></p>

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