Glass Discussion & Research. No ID requests here please. > Bohemia, Czechoslovakia, Czech Republic, Austria

Flanged Vase

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David555:
:oops: Yeah - I take the glow in dark bit back - I misread the following article - you are right and as the author goes on to say it is lavender that changes colour - it's like an early dichroic glass - first discovered in 1885 and patented by Moser and then used by a lot of companies including ZBS – it is rarer than iridescent or ‘Uranium‘ glass
 
"Do you have any of that glass which looks lavender in daylight or in incandescent light and then turns to a pale blue colour in fluorescent lighting, and it is or was referred to as Alexandrit or Alexandrite by Moser Glassworks; as Wisteria by The Fostoria Glass Company; as Twilight (but not Twilite nor Wistaria) by Tiffin Glass Company and as Dawn, if made by Tiffin in Duncan & Miller molds  but not Dawn, which is grey, if made by A. H. Heisey & Company, but instead as Alexandrite by Heisey ; as Wisteria by Steuben Glass Works; as Heatherbloom by The Cambridge Glass Company, but not all Heatherbloom; as Neo-Blue or Neodymium glass by Lotton Art Glass; as Alexandrite by Morgantown Glass Works; as Wisteria by Fenton Art Glass Company, but only that made in 1977 and 1978; as Alexandrite by Boyd`s Crystal Art Glass; as Pink Luxodine or Luxodin by  the Czech glass company of ZBS (Zeleznobrodske Sklo A. S.)" - author Judith Van Buskirk-Gugudan  :D

Anne:
There's a rather nice example of a Neodymium vase under three different lighting conditions in a post by DenCill here on the board: http://www.glassmessages.com/index.php/topic,1838.0.html

David555:
I just tested my vase under strong LED light and it turns pink - like sommerso at first - I have not tried it under UV - I wonder if it is Neodymium or just wierd?

Max:
One of mine does that.  Perhaps it's another rare earth in the mix.

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