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<p>[QUOTE=&quot;desertgem, post: 1251825, member: 15199&quot;]Doug, that is not a real experiment , that is potluck serendipity. To confirm within a reasonable doubt would require a sample of at least 100&nbsp; new gold coins, and separate comparisons for gold coins in each different environment. Since &quot;toning&quot; as normally used, is a chemical reaction to non-coin factors such as environmental gases, separate test environments of open to air and vacuum sealed would need to be maintained. If 5% or more toned in air and 0% toned in the vacuum within the year, you would have a believer, otherwise, it doesn&#039;t confirm. Alas, I do not have funds to obtain 200 new gold coins myself, so I must decline this interesting experiment. To me there is a difference from pure gold turning color and pure gold &quot;toning&quot;, as the color of gold is more a quantum energy level change of electrons, and toning would be a chemical reaction of those electrons. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /></p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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