Glass Message Board

I've just been reading on something else and this caught my eye.  Am I translating this incorrectly? or misunderstanding what's written?
And does it just pertain to uranium opaline glass?

Pressglas-korrespondenz 2005-2

https://pressglas-korrespondenz.de/aktuelles/pdf/pk-2005-2w-mannoni-opalines.pdf

 Seite 132 von 276

Quote:

'In Berlin, wo Jean Kunckel als großer Alchimist gewesen war, isolierte und bestimmte hundert Jahre später
1789 ein Professor der Chemie Klaproth (1743 - 1817)
das Uran. Von Uran, als oxydierend, gibt es grüne Uranoxyde, die nicht fluoreszieren. Mehr oxydiert, gibt es
zusammengesetzte gelbe Uranoxyde mit einer grünen
Fluoreszenz. Wenn man der Zusammensetzung der
Glasmasse Natrium-Uranate hinzufügt, erhält man ein
Glas mit zitronen-gelber Färbung durch Brechung, klar
grün, leicht opalisierend durch Reflektion. Diese Dichroïsmus genannte Eigenschaft entsteht durch Fluoreszenz, die das Uran im Glas hervorruft. Blei ist ein Hindernis für die Fluoreszenz. So hat man kein Interesse,
Kristall mit diesem merkwürdigen Oxyd zu opalisieren.
Nur Glas wird also mit Uran gefärbt werden.'

Using google translate I think that reads (my bold):

'In Berlin, where Jean Kunckel had been as a great alchemist, isolated and determined a hundred years later
1789 a professor of chemistry Klaproth (1743 - 1817)
the uranium. Of uranium, being oxidizing, there are green uranium oxides that do not fluoresce. More oxidized, there is
composite yellow uranium oxides with a green one
Fluorescence. If you look at the composition of the
Adding sodium uranate to glass mass gives a
Glass tinted lemon-yellow by refraction, clear
green, slightly opalescent due to reflection. This property, called dichroism, is caused by fluorescence caused by the uranium in the glass. Lead is an obstacle to fluorescence. So you have no interest
To opalize crystal with that strange oxide.
So only glass will be colored with uranium.'

(Still wondering where the Queen Victoria bowl was made obviously and trying to work out whether it was lead glass)

Interestingly, this is a Baccarat reference but I think the shape is ... pretty much the same apart from no bubbly decoration between the lobes and foot width seems to be a bit wider than yours. Correct base as well
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Pressglas-Korrespondenz 2103-3

https://www.pressglas-korrespondenz.de/aktuelles/pdf/pk-2013-3w-vogt-bacc-louis-opalin-vasen.pdf

See Number 20 on the page of Vases de Fantaisie (Suite)  from MB Baccarat 1865  Planche 38

So possibly yours may date around that period?

I did see that but have been trawling through the photos of the museum collection - there aren't that many available online - and couldn't see it.  And I'm always wary that they meant exactly the same model.  Or did they mean they thought it looked similar.  Mind you there's a lot of glass there:
https://www.saint-louis.com/en/edito_article_museum

I also saw the yellow Baccarat and the Les Opalines reference - but I think if yours had been in the book the seller would have referenced it.  So assume it isn't.

You could try contacting Saint-Louis.  I don't know if you'd get a response ... but you might?

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Did you see the bottle in a similar style from the same seller, that is Baccarat? https://www.proantic.com/en/1086209-rare-bottle-in-yellow-opaline-baccarat-pineapple-model-xixth-napoleon-iii-period.html

Looks like the book Les Opalines by Christine Vincendeau might be worth reading judging by the page the seller shows for the Baccarat piece.

You would think if they had a reference for Saint Louis they would mention it.

I’ve only got the two pieces with gilding that I’m bothered about so not too much of a problem, I’m more worried about cracking the screw lid on my other bit!

Ok thanks - hopefully Saint Louis - I’ll leave it for a bit before trying to contact them incase I stumble across something

I looked on the cmog, they have several Saint Louis catalogues but mainly later and I didn’t notice anything similar, there are not many vases anyway.

Interesting what you say about the moulds, pleased mine still has gilding! I read on one topic how an item was considered to be a “wreck” due to worn gilding, which seemed a bit harsh. I’ll not remove the gilding but it’s a bit inconvenient not being able to handle it properly. It would be quite tactile otherwise