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<p>[QUOTE=&quot;TallCakes, post: 4406420, member: 107&quot;]detecting &quot;glowing&quot; of crystal EAPG can be difficult; need to be in total darkness and sometimes rotate the glass to see any faint &#039;glowing&#039;. Just checked a Gillinder &#039;Rustic&#039; piece that I have and it is very faint...</p><p><br /></p><p>edit: it&#039;s manganese in the glass that is used for clarity that will cause a faint glow with blacklight in total darkness. The same manganese will cause the glass to sun purple if left in sunlight for a loooooong time, which is considered &#039;damaged&#039;... there was a time when sellers would use powerful UV lights to simulate extended sun exposure to purposely purple EAPG, thus irreversibly damaging lots of EAPG...</p><p><br /></p><p>not aware of reproductions; Gillinder is still in business making engineered glass...</p><p><br /></p><p>as to &#039;crispness&#039;, this can often be attributed to extended used of molds; the crispness of the pattern deteriorates with use, making later produced pieces less crisp. Crispness can also be affected by the extent of fire polishing...[/QUOTE]</p><p><br /></p>

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