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<p>[QUOTE="Lecollectionneur, post: 442471, member: 8569"]Years ago I've worked on that problem with a technician in the glass factory of Saint-Prex, one of the most important in Switzerland, and he explained me what is this "disease" as he said in french when i make a direct translation.</p><p>It's a part of the salt needed for glass making which solves in distillate water, it can come on some lead crystal too when it's the same problem.</p><p>It explain me why it cannot be reversed, when glass has this problem in fabrication it comes always back whatever you make.</p><p>The only solution possible is to mask that with a coating of resin or varnish when it's your piece but for a seller it's a forgery to make it.</p><p>All which comes from digging have this problem and that can deteriorate and colour glass as you have certainly seen on Roman glass, the best example.</p><p>This is documentation about that problem on those links but in French, you can certainly find the same in English with the right Google search.</p><p><a href="http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/37/038/37038437.pdf" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/37/038/37038437.pdf" rel="nofollow">www.iaea.org/inis/collection/NCLCollectionStore/_Public/37/038/37038437.pdf</a></p><p><a href="https://pastel.archives-ouvertes.fr/tel-00008627/document" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://pastel.archives-ouvertes.fr/tel-00008627/document" rel="nofollow">https://pastel.archives-ouvertes.fr/tel-00008627/document</a>[/QUOTE]</p><p><br /></p>
[QUOTE="Lecollectionneur, post: 442471, member: 8569"]Years ago I've worked on that problem with a technician in the glass factory of Saint-Prex, one of the most important in Switzerland, and he explained me what is this "disease" as he said in french when i make a direct translation. It's a part of the salt needed for glass making which solves in distillate water, it can come on some lead crystal too when it's the same problem. It explain me why it cannot be reversed, when glass has this problem in fabrication it comes always back whatever you make. The only solution possible is to mask that with a coating of resin or varnish when it's your piece but for a seller it's a forgery to make it. All which comes from digging have this problem and that can deteriorate and colour glass as you have certainly seen on Roman glass, the best example. This is documentation about that problem on those links but in French, you can certainly find the same in English with the right Google search. [URL="http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/37/038/37038437.pdf"]www.iaea.org/inis/collection/NCLCollectionStore/_Public/37/038/37038437.pdf[/URL] [URL]https://pastel.archives-ouvertes.fr/tel-00008627/document[/URL][/QUOTE]
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