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<p>[QUOTE=&quot;desertgem, post: 1969099, member: 15199&quot;]Do you know what makes lustre? here are photo micrographs of the surface of a MS Peace dollar surface with lustre at approx. 350x and 800X. Notice the vertical ridges that act as reflector surfaces to produce a &#039;wagonwheel&#039; effect as you rotate the coin. This is also what produces toning when thin layers of chemicals overlay the reflective surface. Any solution of chemicals or mechanical wear that reduces these tiny vertical protrusions will remove lustre and produce a flattened area on the surface, So it is the amount of such attenuation that reduces luster. Yes/no is a good answer....but almost always&nbsp; towards the negative effect.</p><p><br /></p><p><br /></p><p><img src="http://i455.photobucket.com/albums/qq279/desertgem/peacecomp.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" />[/QUOTE]</p><p><br /></p>

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