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<p>[QUOTE=&quot;iPen, post: 2351284, member: 69760&quot;]Just to be clear to everyone, I know what cartwheel luster looks like to the naked eye lol.</p><p><br /></p><p>I&#039;m reading and rereading how cartwheel luster is made, and what it looks like at the microscopic level in terms of its physical form.</p><p><br /></p><p>The rays on the Russian coin do in fact have a cartwheel luster effect. Whether or not that&#039;s because of the &quot;peaks and valleys&quot; of the rays and fields, or if the fields of that area were too far recessed for any damage to occur (thereby retaining original luster) may be way the cartwheel luster appears. Either way, cartwheel luster is only present in the area of the sun&#039;s rays.</p><p><br /></p><p>The example of the rays is used to see if that would be analogous to the microscope level peaks and valleys of the coin.</p><p><br /></p><p>Using a different example, here&#039;s a Rolex watch with what&#039;s called a &quot;sunburst&quot; dial. It also creates a cartwheel effect.</p><p><br /></p><p>Pic from the &#039;net.</p><p><br /></p><p><img src="https://watchchest.com/media/catalog/product/cache/1/image/1200x/9df78eab33525d08d6e5fb8d27136e95/r/o/rolex-datejust-gold-champagne-sunburst-roman-dial-16233-oyster-watch-chest-g2.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" />[/QUOTE]</p><p><br /></p>

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