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<p>[QUOTE=&quot;GDJMSP, post: 739548, member: 112&quot;]Once stripped of its luster, which is what over-dipping does, a coin will never again tone like it did when it had luster. Luster is what makes a coin prone to toning to begin with. </p><p><br /></p><p>Think of it like this, if greatly magnified the surface of coin with luster would look like this - /\/\/\/\/\. While the surface of a coin without luster would look more like this - ______________ .</p><p><br /></p><p>It is the multiple facets (more area) of the metal&#039;s surface being exposed to the air, and the angle of those facets reflecting and refracting the light that creates the colorful effect of toning that out eye sees.</p><p><br /></p><p>The less the angle and the smaller and smoother the surface area - the less the light is reflected and refracted thus producing less color, and the more the time frame is lengthened.</p><p><br /></p><p>That&#039;s what dipping does - it flattens out and smooths the surface of the coin when it removes that fine textured layer of the metal.[/QUOTE]</p><p><br /></p>

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