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<p>[QUOTE=&quot;Ce BCA, post: 3702573, member: 18716&quot;]I&#039;ve just bought a decent microscope so I put the glass filled ruby under it since we were talking about it.&nbsp; Pretty easy to see the bubbles and fracture lines at 6.5x.&nbsp; You can see them ok with a 10x loupe and decent light as well, but under the scope it really leaps out.&nbsp; At 20x you can see the network of fine fissures and other inclusions, at 40x the bubbles look like soap bubbles in the air.&nbsp; At 70x you can see even the tiny fractures that run through and there are inclusions in the glass area.</p><p><br /></p><p>Interestingly this ruby tests as corrundum still, so the glass must be largely internal with it forced through the cracks and fissures.&nbsp; I can&#039;t really get at it from the culet side to see if that is the same or if it&#039;s glass at that point.</p><p><br /></p><p>I do see some shops selling them as rubies, but they also specify glass filled in the description, problem is if the customer doesn&#039;t know what this means.&nbsp; Not sure if that&#039;s better or worse than all the &#039;diamonds&#039; etc on ebay and etsy.[/QUOTE]</p><p><br /></p>

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