RocKingRuralMo
starting to spend too much on rocks
Member since July 2022
Posts: 109
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Post by RocKingRuralMo on Apr 20, 2024 8:54:18 GMT -5
I've got about 20lb of Mexican Fluorite in my workshop and was really happy with it when I cut it open. I know sunlight can fade it over time. What about artificial light (like, say, in a windowless office space?) Will that fade it too? If so, how might I manage it so the colors are more stable? Would a UV coating help?
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chaosdsm
starting to shine!
Member since April 2024
Posts: 37
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Post by chaosdsm on Apr 20, 2024 12:23:00 GMT -5
I'm not familiar with fluorite, but if it's anything like wood, nothing will stop it....
BUT, oxygen is the primary agent for color change in wood. A quick Google search says it's sunlight not oxygen that fades fluorite, so a display case made with UV treated Lexan or Acrylic might help.
Most UV protective coatings (brush on / spray on) tend to add a slight yellow cast to whatever is being protected. Marine Spar Urethanes that are used on the spars (center mast) of sailing ships are really good, but add a noticeable yellow cast, especially to lightly colored items, and would need to be refreshed every 3-5 years to maintain their protection.
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titaniumkid
starting to spend too much on rocks
Member since June 2023
Posts: 204
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Post by titaniumkid on Apr 21, 2024 0:35:16 GMT -5
I don't know if a UV protective coating is necessary or helpful, but if it was, some of the UV-resistant varnishes used on fine art might be better to avoid yellowing. Test a small piece first.
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