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<p>[QUOTE=&quot;Kentucky, post: 1867116, member: 33176&quot;]Food for thought.&nbsp; I teach a chemistry lab where the students examine different elements and answer questions about them.&nbsp; One of the questions is:&nbsp; Does the material have luster - which I translate for them:&nbsp; Is it shiny.&nbsp; I know this isn&#039;t quite correct, but trying to simplify, we have to make some concessions.&nbsp; I like Doug&#039;s statement &quot;Every coin struck by dies has luster, every coin. &quot; but it leaves it in question, do older silver coins that have been dipped to death and don&#039;t reflect light also have luster?&nbsp; Also I have been sometimes stumped by the term &quot;cartwheel luster&quot;.&nbsp; I am assuming that means the spoking effect you can sometimes see as you do an off-center rotation with the coin held between thumb and forefinger.&nbsp; Comments?[/QUOTE]</p><p><br /></p>

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