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<p>[QUOTE=&quot;antique85, post: 4268627, member: 7651&quot;]Perhaps,&nbsp; this Gem-A webpage on using black light and fluorescence might be of interest. &quot;The Gemmological Association of Great Britain, or Gem-A, is the world’s longest established provider of gem and jewellery education.&quot; I found the information about having the gemstone &quot;table down&quot; particularly helpful.</p><p><br /></p><p><br /></p><p>1. &quot;<a href="https://gem-a.com/gem-hub/gem-knowledge/focus-on-fluorescence" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://gem-a.com/gem-hub/gem-knowledge/focus-on-fluorescence" rel="nofollow">https://gem-a.com/gem-hub/gem-knowledge/focus-on-fluorescence</a>&quot;[/QUOTE]</p><p><br /></p>

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