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<p>[QUOTE=&quot;GDJMSP, post: 1363652, member: 112&quot;]Oh c&#039;mon Thad sure we do <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" /></p><p><br /></p><p>Ricky, in simple terms toning is nothing but oxidation of the metal. It&#039;s a chemical reaction between the metal itself, oxygen in the air, and various other chemicals in the air. </p><p><br /></p><p>We say that iron and steel rust, but that&#039;s a just a common usage word for it oxidizes. The same thing happens with coinage metals, they oxidize. It is a chemical breakdown the metal molecules themselves. And as the metal oxidizes it changes color. And then we have what we call toning. Toning is a common usage word for oxidation that is used when talking about coins. When the very same thing happens to other items made of the same metals our coins are made of we call it tarnish. Rust, toning, tarnish, they are all common usage words for oxidation. But each has a specific application that is only used when talking about a given subject.</p><p><br /></p><p>The reason we colors, any colors from gun metal grey to reds, greens, blues etc., is due to the properties of light. For just as you see colors when you shine white light through a prism, you see colors on coins when light is reflected and refracted while passing through oxidation. The oxidation acts as a prism acts.</p><p><br /></p><p>That&#039;s about all there is to it.[/QUOTE]</p><p><br /></p>

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