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<p>[QUOTE=&quot;desertgem, post: 2114831, member: 15199&quot;]I was just in envy of their available instruments <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /> This was back when the Chinese were having so much &#039;red spot&#039; trouble with some pandas. The same thread had notice of .999 and perhaps .9999 gold of other countries also having spots, so perhaps there are other effects. I have always had some concerns due to the &#039;red&#039;color being so much more like &#039;ruby&#039; glass that had gold chloride or colloidal gold as the colorant. Perhaps the initial &#039;hole&#039; is started by the silver sulfide, and chlorides can interact with the gold at a later time on a different level of physics/chemistry to produce the red surrounding it. </p><p><br /></p><p>If we didn&#039;t learn new things all of the time, we would be dead <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />&nbsp; Jim[/QUOTE]</p><p><br /></p>

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