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<p>[QUOTE="Lehigh96, post: 1081615, member: 15309"]Don't take this the wrong way but that response deserves a COME ON MAN. Coin Chemistry is an advanced text on the subject written by a guy whose opinion of toning is tantamount to the lunatic fringe of the numismatic community. I really feel as if a much simpler response is appropriate to the OP's question.</p><p><br /></p><p>In a nutshell, rainbow toning is the result of oxidation and a phenomenon called the thin film interface. One of the very best explanations of toning can be found on this very forum written by Jason (physicsfan314). Here is the link:</p><p><br /></p><p><a href="http://www.cointalk.com/t84670/" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t84670/">What You Need to Know About: The Science of Toning</a></p><p><br /></p><p>BTW, rainbow toning can be both natural or artificial.[/QUOTE]</p><p><br /></p>
[QUOTE="Lehigh96, post: 1081615, member: 15309"]Don't take this the wrong way but that response deserves a COME ON MAN. Coin Chemistry is an advanced text on the subject written by a guy whose opinion of toning is tantamount to the lunatic fringe of the numismatic community. I really feel as if a much simpler response is appropriate to the OP's question. In a nutshell, rainbow toning is the result of oxidation and a phenomenon called the thin film interface. One of the very best explanations of toning can be found on this very forum written by Jason (physicsfan314). Here is the link: [URL="http://www.cointalk.com/t84670/"]What You Need to Know About: The Science of Toning[/URL] BTW, rainbow toning can be both natural or artificial.[/QUOTE]
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