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<p>[QUOTE=&quot;desertgem, post: 2129840, member: 15199&quot;]Thanks Yankee, that is an interesting article. I can start searching for patents filed by the company.&nbsp; </p><p><br /></p><p><br /></p><p><br /></p><p>Analysis of the spot composition would be a tremendous help with the problem. I am certain it has already been done, either by the mint, PCGS, or others that have their hands on devices which can isolate the process to just the spot area.</p><p><br /></p><p>Both the &#039;reappearance&#039; and &#039;time to develop&#039; are curious, but not unexpected for chemical reaction. Most reporting such on the forum do not seem to indicate that they observed and increasing in size effect. Most just say they were &#039;suddenly there&#039;, so much of objective input is missing such as initial appearance, growth rate and conditions, etc.[/QUOTE]</p><p><br /></p>

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