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<p>[QUOTE=&quot;desertgem, post: 8063093, member: 15199&quot;]Also there were a few cents with gold leaf treatment ( thickness of 4-5 millionths of an inch ) produced by several &quot;mints&quot;.&nbsp; I have a small booklet of such sheets from an art project a decade ag0. Even with the increase in gold value it isn&#039;t worth even a dollar. Gold can be processed until it is so thin one can see through it. Google&nbsp; gold leaf for more fun facts. </p><p>&nbsp;&nbsp; &nbsp; When I was in college and using an electron microscope, we would &quot;stain&quot; chromosomes of Drosophila with gold or osmium tetraoxide by electrically sputtering it in a vacuum chamber. Gold was cheap then, osmium was extremely expensive ( and dangerously unhealthy) which explains a lot about me I guess <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />. </p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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