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<p>[QUOTE=&quot;Cringely, post: 982338, member: 22271&quot;]Gold will combine with other elements to form compounds. Look it up in any inorganic chemistry book (unfortunately, mine are all packed away. Otherwise, I&#039;d cite specific examples). The only elements that won&#039;t combine with others are the noble gases, and even then Xe is known to form compounds.</p><p>As far as purity, there is no known room temperature solid element that is perfectly pure. Yes, you can get 6 or 7 nines purity (99.9999 or 99.99999%) if you are willing to work hard enough (<i>i.e.</i>, spend a lot of $$ getting those purity level). So IMO, even pure gold, when exposed to appropriate contaminants (<i>e.g</i>., sulfur) will tone at some point.[/QUOTE]</p><p><br /></p>

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