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<p>[QUOTE=&quot;tmoneyeagles, post: 2711431, member: 17557&quot;]Though it wasn&#039;t intended for me, thanks for the bump, Paul. In the middle of typing this out I went back to see the published date...2009! Time flies! I appreciate this thread much more now after having completed related university coursework before earning my degree.</p><p><br /></p><p>[USER=19165]@physics-fan3.14[/USER] Jason, I&#039;ve made note of one of your references, &quot;Coin Chemistry,&quot; and have several threads by Sunnywood bookmarked over at CU that deal more with colors and optics IIRC. If there are any other related threads--written by you or otherwise--books, or research articles on this topic that you have stored away that deal with chemistry and the reactions of toning proper, I&#039;d be much obliged. [USER=15199]@desertgem[/USER] I feel like this request is up your alley as well.</p><p><br /></p><p>Thanks for the OP, Jason. Very well done.[/QUOTE]</p><p><br /></p>

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