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<p>[QUOTE=&quot;GDJMSP, post: 1950906, member: 112&quot;]As I have suggested many times, anybody who wants to prove to themselves and see with their own eyes that gold, even pure gold, tones - can easily do so by conducting a little experiment right in your own home. It&#039;s very simple, go out a buy a gold coin - .999 or .9999 gold. (That is pure gold, there are no impurities in it to cause toning as claimed.) Take it home and store it in the open air for a year, or longer if you like.</p><p><br /></p><p>At the end of that year take said coin with you to the coin shop and ask the owner to see a new, freshly minted, gold coin of the same purity. Lay your coin down on the counter next to the new coin. You will see a difference in color between the two.</p><p><br /></p><p>Now Chris you claim this color is &quot;atmospheric haze&quot; that will wash off. But wash off with what ? You can rinse the coin in distilled water, the color will not change. You can rinse it in acetone or xylene, the color will not change. Why not ? Because those things will not &quot;wash off&quot; toning.</p><p><br /></p><p>But yes, you can wash it off. But only if you use a commercial coin dip that will &quot;wash off&quot; the toning from any coin.[/QUOTE]</p><p><br /></p>

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