Glass Message Board
Glass Identification - Post here for all ID requests => Glass => Topic started by: flying free on February 18, 2012, 07:27:46 PM
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I've wondered this on and off over the years. I love yellow and feel that I need some yellow in most of my displays, but I have very few pieces and I see very few pieces ever for sale - I have one Carlo Moretti, 1 Aseda Bo Borgstrom vase and a Nazeing cloudy yellow posy plus one yellow tango piece. I'm aware there were yellow cased pieces done especially by the Scandinavian glass makers and also Empoli but I don't often see many of those around. I do recall reading somewhere on the board that yellow is hard to control. Has anyone else wondered this?
m
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Yes, not a matter of wonder, yellow is a very difficult one.
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Yes, not a matter of wonder, yellow is a very difficult one.
Really..... Yellow is hard to control? :o What makes yellow so much hard to control than another (or any) color ??
I never knew that. So would that apply to this bowl HERE (http://www.glassmessages.com/index.php/topic,45910.0.html) too ??
Super question flying free. Learn something new everyday!!
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Good morning all! Yes I had noticed that yellow was scarce on the ground m, and it is my favourite colour.....in fact I think I mentioned that in your link Rose.
Would anyone like to 'splain why it is difficult? Sue, you often have answers to glass production problems, can you help here, as I have over 600 pieces of glass and only half a dozen are yellow, which is strange considering it is my favourite.
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Umm - this is getting into hard physical chemistry, not my area!
I'm sure it has been explained here before - many, many moons ago - possibly circa 2004.
Perhaps folk have also noticed that in old ceramics, porcelain and china, yellow is a highly unusual enamel to find - it is always indicative of a superior and very expensive production.
But we need somebody else to explain it. I've forgotten.
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The answer could be here:
[Mod: huge Google url converted to clickable words]
Google Books Link (http://books.google.co.uk/books?id=CZDZLcI2ScEC&pg=PA219&lpg=PA219&dq=yellow+glass+problems&source=bl&ots=aFsN_cJLRY&sig=0efX7DZGxGurf_3NuOiyKDEEKLk&hl=en&sa=X&ei=xehAT-qWGsbR0QXcqsSPDw&sqi=2&ved=0CCIQ6AEwAA#v=onepage&q=yellow%20glass%20problems&f=false)
but I'm not a chemist so my brain just starts thinking about looking at pretty things when I read it!
I also have a 'would this apply' question for this item I found:
http://www.glassmessages.com/index.php/topic,44395.msg247264.html#msg247264
It's a bit of a head scratcher because I'm not convinced this is high quality. It's very lightweight but, the scarcity of yellow glass made my mind up to buy.
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Oooh, thanks for that Scavo.....my brain hurts now, but I get the gist that it takes Platinum to turn glass yellow, and as that is an expensive element, it will increase the cost considerably? Am I getting this right?
Where are the chemists and glassblowing experts this morning.....out walking in the sunshine?
I won't be selling any of my yellow glass anyway, not until I get a definitive answer.
You are right about yellow tiles as well Sue, I had the devils own time trying to find them for the kitchen....got some in the end, but wow, expensive!! Red tiles seemed to be tough to find as well, but there is plenty of red glass around, so back to the yellow glass conundrum!
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Red glazed tiles are not rare in either glass or ceramic but you don't see yellow ones often.
Cadmium is used for yellow in paint and enamel.
It's interesting because Yellow is one of Heals hot colours for home decor this season.
http://www.heals.co.uk/vases-bowls+objets/beauty-vase-yellow/invt/beautyvase?htxt=%2FUvRjc0xAaKk26JwgsxcsV6E2gjpK53ITJCPcypNRrR6jhjYX3SDlEUFWaOdTpLU0xVcTayKYYOc%0Aw4t9gBa9qg%3D%3D and this vase looks quite pricey (?) - everything Heals is pricy! And they don't say who the maker is. This looks similar to my vase (post above) except the neck is cut differently.
I am going to have to dig my yellow vase out of the cupboard!
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I was told by a Whitefriars cane maker that they had problems with the yellow canes , and you dont see many of their weights with yellow canes , now i suppose Nigel will say he has a kitchen full of them ;D ;)
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It certainly looks very like your vase scavo, I looked at your link. What a shame they don't say where or by whom it was made....do you think they might answer if you emailed them?
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Does this apply to 'modern' pieces? the two on the right are quite new.......
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I would imagine it's the platinum that causes the problems - and the difficulty of yellow probably only applies to old stuff - and there will be differences in how difficult cadmium and platinum are.
Platinum is one of the most inert metals - even more so than gold, so it IS going to cause problems!
I don't know how modern colours are produced or made. They're mostly bought in from a supplier, rather than glassmakers making their own, nowadays.
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:thup: :thup: Super info there. I thought maybe just a little difficult, but that article makes it sound much more difficult. So super Info here.
@ Rose - Yeah, I know you did -- but I just never realized it was hard to make, I just thought maybe it was not a well liked color in the Glass world.
Now WE all have to load up on Vintage Yellow Glass. Keith has a head start on us! LOL
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I remember making two very different yellows at two factories. At Sowerbys we made a small amount of something like yellow which was simply a paler version of our standard amber. In both cases the colourant was powdered coke in a non-oxidising glass. We used covered pots otherwise there might have been stability problems. There was never any trouble with amber and I don't remember any with yellow although very little was made. I can only remember making pattern 2652 cake plates and possibly fruit sets in this colour. I'm not sure but I don't think the colour was even listed in any catalogue. There certainly was no huge demand!
At Davidsons our compositions were more sophisticated, but in many cases very empirical indeed. We had a requirement for a cadmium yellow for fog lamps which we made successfully but only in small numbers. I was not aware of any request from the domestic people to make any for them but I don't know whether lack of demand or the cost put them off. Cadmium was the main colourant but it was a complicated batch but I would need time to dig out details. Certainly no platinum!! Where did that idea come from? I don't know how I would introduce platinum to a glass composition even if I wanted to. I suppose some organic compound might do it but why? Platinum metal itself is extremely resistant to corrosion by molten glass and is widely used for electrodes, orifice rings and even pots (I've seen some the size of a bucket) for technical, very pure glasses. The accountants loved it because even a small level if inflation meant that the scrap value when a a piece was taken out of service paid for the replacement!
I did have one adventure with a pot of yellow at Davidsons which I described on GMB years ago (probably under the heading of "tatying"). I can probably find it but I am sure Anne will beat me to it with her usual magic!
Adam D.
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Thanks so much Adam for looking in and for the very informative answer :) and to everyone who supplied information.
So, perhaps it was a mixture of events that dictated the use of yellow, fashion (demonstrated by the lack of demand on the domestic sales side, but that might have been down to knowing the cost therefore not pushing the demand) and possibly also the cost of the cadmium both in terms of the buying the cadmium in and sourcing it, but also man hours to make if it was a difficult batch. Therefore more expedient to stick with the colours more readily available and more easily controlled.
m
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Hi Adam......I thought I read in Scavo's link that platinum was used for turning glass yellow.....but I must confess to speed reading it......I will read it over again when I have a new brain in the morning, and see what it was I saw that made me think that's what it was saying. :pb:
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Within the Google Books search results from Scavo's link above, there are references to "platinum colouring glass". But the context is not as may be first thought. It is stated that at Corning Glass Works, the Experimental Melting dept. use platimun crucibles which occasionally cause colour problems, with some glass being coloured "yellow or orange or gray".
See page 218 of the Google Book detail for the starting point of that discussion.
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Isn't the problem with yellow opaque/translucent glass that is a primary yellow (uranium yellow shades are no problem)
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I must confess to not having the patience to read a text like that to the level of understanding it. All I did was speed-read it so I knew I was talking about the subject of yellow glass. So is the book talking about unintentional yellowing of glass that was desirous of clear?
It did cross my mind about yellow uranium glass. Am I right in thinking yellow UV glass is rarer than green?
What about citrine glass? As Christine says, these are not that uncommon - also transparent.
I wonder also if the problem has also been overcome in recent times (Sue).
I'm not convinced that the lack of yellow glass is down to public taste alone. Conversely, if it is something that requires special skills, materials etc. I would expect there to be an element of speculative consumption going on in the primary market and therefor a cache in finding it now?
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All uranium glass is yellow unless you add something else to it. With uranium, it's a fashion/market thing.
As Christine says, these are not that uncommon
That wasn't what I said :-\
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That wasn't what I said :-\
Sorry, correction: not problematic in production.
I also find (without having conducted a real survey) uranium glass is not that uncommon. More common than yellow glass
I always wonder what the attraction was for buyers of uranium glass before the advent of UV bulbs/torches? From what I've read (admittedly online articles not books), the point of UV was to colour the glass not make it glow.
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I've wondered that question too. I love yellow, just like you. It really adds "pop" to a room. I've had a certain piece that I just love, but I still haven't come across anything like it. Here is a link to the vase I placed on the message board:
http://www.glassmessages.com/index.php/topic,30771.0.html
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Uranium glass is extremely common. It was orginally used because on its own it gives a rich, vibrant yellow (annagelb) or a rich and vibrant green (anngrun) depending on the oxidation state of the uranium. The UV in daylight really adds vibrancy to the colours, as you can see when you compare the same item in the "same" colour with and without uranium. This was probably a real selling point in the darker rooms of the late 19th and early 20th century.
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Uranium glass is extremely common. It was orginally used because on its own it gives a rich, vibrant yellow (annagelb) or a rich and vibrant green (anngrun) depending on the oxidation state of the uranium. The UV in daylight really adds vibrancy to the colours, as you can see when you compare the same item in the "same" colour with and without uranium. This was probably a real selling point in the darker rooms of the late 19th and early 20th century.
....For example,no uv torch here...
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iitalla Kivi prices by colour may give an indication of colour cost or just fashion:
£9.50 – Clear, Grey, Sand, Green, Apple Green, Water Green, Moss Green, Cobalt Blue, Light Blue, Turquoise Blue, Turquoise, Sea Blue
£18 – Sweet Pink, Frosted, Bitter Orange, Water Green,
£29 – Seville Orange, Rio Brown
£35 – Light Lilac, Red, Red Garnet, Yellow, Sweet Pink,
£49 – Rose Olive
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In the U.S. during WWII cerium oxide was used in batch mixes as a substitute for Uranium Oxide to make yellow colored glass. Before that period it was normally the Uranium Oxides/Dioxides used although nowhere near the level of the 2% batch weight that seems to be popular with the Vaseline crowd's definition of Vaseline. If the 2% batch weight was applied as a baseline you'd eliminate the vast majority of U.S. yellow glass, e.g. Cambridge Topaz is only 7/10ths of 1% , Gold Krystol 1/10th of 1% & although its not yellow, the highly reactive Light Emerald is only 2/10ths of 1%. Ken
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chipping in with my vagueness again -
I have a factoid bouncing about in my head about yellow being reserved for Emperors in ancient China. I believe this is pertinent to glaze on porcelain and glass.
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....is yellow glass particularly difficult to make?
Glass itself is a peculiar and unusual material.
Glass colour chemistry can be an extremely complex, exacting, precise and dangerous science.
That's why making colours now tends to be largely the preserve of a few specialist companies.
All glass colours have specific features. Making the colour is one thing, using it is another.
See: Linear expansion coefficients, Density, Casting Temperature ranges, Annealing temperature, Strain Point
Several colours have peculiarities eg gold ruby double-strike.
Combining colours doubles the complexity and can be dangerous.
Some pale yellow colours develop over time by accident. See "yellowing"
http://www.glassmessages.com/index.php/topic,24790.msg139708.html#msg139708
http://www.glassmessages.com/index.php/topic,515.0.html
and many other topics
Popular taste
Yellow the most popular of colours. It was more popular in USA than Europe (excluding amber and pale amber)
One person I know doesn't like yellow glass as it reminds them of a certain body fluid.
It reminds me of sunshine, lemons, caramel, gold depending on the shade.
Some of my yellow, yellow-ish and part-yellow glass
https://picasaweb.google.com/108649173706197560364/YellowGlass?authkey=Gv1sRgCNPGkaTB7f7jdw#
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:hug:
Golly gosh, you're busy here today!
Spring in the air???? Yellow fever???? a bit of both???
(There are some yellow bits missing from your yellow album there though - I know. :smg: )
lovely to "see" you here. :ghug:
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Yes Sue, quite a few not photo'd yet, as they're in the permanent collection and the photo queue is already full as usual.
Correction Yellow the most popular of colours.
Should read: Yellow has not been the most popular of colours.
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I'm resurrecting this thread after many years it appears :) It's still a question in my mind.
- I think I only have one more yellow piece (Non-uranium) than I had when I posted this originally- a satin glass vase fairly opaque, with clear satin glass handles - no idea where from. Looks like it could be LaFiori but I really don't know.
So five pieces in total. But it's a question that continues to vex me every so often - why is transparent yellow glass so difficult to find. True yellow, not coloured with uranium.
(In a similar vein, I also raised a question on a different thread about why red or ruby glass never seemed to appear in the spectrum of Sklo-Union glass. And yellow is another of those colours I think. Amber is there, yellow doesn't seem to be from memory.)
- Having re-decorated a room with a bright yellow velvet chair I find I'm dependent on my one yellow Schaumglas piece (from Loetz? or WMF?) for my display. I have the yellow Carlo Moretti satinato but that's elsewhere with the whole set. And I have one Aseda yellow vase, again needed elsewhere.
- The only other piece I have is what I think is an Empoli shape.
It's a very large piece, a very good transparent bright yellow glass. Quite similar to the yellow of the Schaumglas vase actually . It's just a clear transparent yellow.
-Tonight out of curiosity I got it down from storage and checked it again with a blacklight and it glows with an immediate and fluorescent vivid bright orange - so I assume is coloured with Cadmium?
The Schaumglas vase does not glow orange, in fact it doesn't glow at all. The Aseda and the Moretti vases both glow a strong green but it doesn't quite look like a U green fluorescent green and they don't look like Uranium yellow glass in daylight either. They are also a bright yellow glass. The Moretti is opaline satinato. The Aseda is not really transparent like the 'Empoli' vase - difficult to explain.
- So, I was doing a bit of reading this evening and came across this information from 1895. It appears to be dated 15th March 1895 although I know from previous reading of these types of documentation that information can sometimes have originated from a much earlier date and just copied from year to year so it could be from earlier. In the particular section I mention it states at the end 'Specially translated from Diamant for the American Manufacturer . I have no idea what Diamant was.
See page 374 of the American Manufacturer and Iron World Pittsburgh 1895.
Under the heading 'American Manufacture. Glass. Yellow glass' :
The author discusses using silver chlorides to colour glass yellow. It says it is chiefly used for 'flashed work' and 'cannot be used for alkali-lime glass' and 'consequently used to colour the more fusible lead glass'.
Then the use of silver chromates.
Then the use of uranium and under uranium also mentions that a large quantity is necessary and it's very expensive and so was only used for the finest grade glass.
It then goes on to say: 'The latest material to come into use for coloring glass yellow is cadmium and it's compounds.' (See middle column for detailed information.)
From my reading it seems that not only was sulphide of cadmium difficult to use in the making, it also caused problems in the annealing process?
https://www.google.co.uk/books/edition/Steel_and_Iron/j7E4AQAAMAAJ?hl=en&gbpv=1&dq=cadmium+in+yellow+glass&pg=PA374&printsec=frontcover
To summarise ( and open to correction as I have no idea about glass chemistry and making )
It reads to me that uranium was expensive and could only be used in fine glass, cadmium could be difficult to control in the making and the annealing, and silver could not be used for alkali-lime glass and only for the more fusible lead glass.
Therefore I wonder if that's why it's still quite hard to find a good transparent yellow glass? Not amber. Not uranium yellow. Not cased or opaline. But a good clear transparent bright yellow glass?
m
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Your post made me wonder about the availability of yellow glass, M, so I resorted to a Google image search to see what comes up, and a fair bit does, but I have no idea if they contain uranium or not, of course. :'( I do have a paperweight containing a yellow flower design but very little else in yellow except my Heron Glass bowl which is yellow but isn't clear glass.
Some examples to explore in the meanwhile: https://www.pinterest.co.uk/theglassgarden/yellow-glass/
and this gorgeous yellow bird! https://www.etsy.com/uk/listing/551340930/yellow-glass-bird-ornament
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This is an interesting thread.
I cannot contribute to the chemical side; so if it is a matter of technical difficulties or taste why we see yellow glass less frequently I don't know...
So just some random thoughts ;)
I think that one aspect is that, yellow being a light colour, we don't perceive transparent yellow as a strong colour.
To get a really strong yellow, there is usually some sort of opaqueness to the glass (opaque yellow, yellow over white, opalescent yellow).
I looked through my collection, and attach a few pics:
1. Sklo Union pieces do come in yellow, though it is not a really strong one
2. Citrin pieses like this one from Hessenglas or pieces from ZBS (or Moser a few decades earlier) are surely a clear (yet light) yellow
3. Aseda goblet (@m: I totally forgot about this one :)) ) shows really strong yellow due to opalescence I think, but is not transparent.
4. The only true strong yet totally transparent yellow in my collection is this Murano bowl. As far as I remember it is not Uranium glass
Karcag also had a strong yellow. I think again due to the reflectiveness in the glass (from the fine crackle) >> Link (https://www.pinterest.com/pin/303007881149796640/)
Michael
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I have that Sklo Union bowl - not really yellow in my eyes ;) - I would class it as Citrine although I know it appears darker than the vase below it in your post. It's a gorgeous colour but not quite the same.
I also have a little triangular bowl that I had in dark green, proper yellow and also a turquoise. I thought they were Sklo Union pieces originally but I think they were determined to be Polish in the end. ... hang on just going to check the glow on the small bowl. Ooh have just checked the triangular bowl and it glows bright orange as well! hmm. I'm wondering where my 'Empoli' shaped vase was made. I say 'Empoli' shaped because it reminds me a little of this pink one
https://www.glassmessages.com/index.php?action=dlattach;topic=38356.0;attach=64773;image
I will try and get a good photograph and upload.
Edited to add:
Ok, I've had to squash them together to get a representative light through them from the winter light outside.
The amber one is a Sklo Union vase on the left, the 'citrine' bowl on the right is also Sklo Union. Neither glow orange under blacklight.
The 'Empoli' shaped vase and the little triangular bowl are the same colour and both glow orange - maybe from the same maker?
Anyone seen anything in the shape of the big yellow vase then?
m
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I think I was wrong about the triangular bowl - can't see anywhere on the board where it has been id'd.
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John Walsh Walsh Primrose seems pretty yellow to me
https://fieldingsauctioneers.co.uk/lot/175015
I believe the bright yellow is obtained by casing white opaline with amber. It was certainly the case with a Victorian lily vase I had which was bright yellow though at the very base of the trumpet which had no casing, you could see it was amber. That particular vase was made by Kempton.
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Flying-free - could your Schaumglas "query" vase be WMF Medusa?
I had a piece and discovered that was the name for the yellow incarnation. It is quite an unusual range. I'm pretty sure it glowed bright orange in uv.
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Hi Sue - thank you :) I queried it because I've never been quite sure whether it was Loetz Schaumglas or WMF Medusa.
Mine doesn't glow - nothing at all under blacklight. Lead glass and not coloured with cadmium then maybe? Perfectly polished pontil mark in the middle. The white internal decor is white powdery stuff not bubbles and was gathered on the first gather (very bumpy on the internal wall of the vase) and then finely cased over on the external layer also of yellow glass. It looks very yellow.
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Thank you Anne for the images :) They've prompted me to do some more searching.
English Weather thank you . That's interesting how Walsh Walsh have created their yellow. The link I gave discusses also how silver was used to colour over opaque white glass I think. Fascinating how they've all developed their own methods of creating the yellow appearance.
I've been on a mission and found some Welz yellow coloured with cadmium. Great colour! Welz also patented an orange as well. They were the teenagers of glass of their time in my eyes - way ahead of their time in developing amazing fabulous decors and great shapes. I think of them as the Harvey Nichols to Loetz's Harrods ;D
http://www.kralik-glass.com/welz-images/draped/wdraped4.jpg
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I also have a little triangular bowl that I had in dark green, proper yellow and also a turquoise. I thought they were Sklo Union pieces originally but I think they were determined to be Polish in the end. ... hang on just going to check the glow on the small bowl. Ooh have just checked the triangular bowl and it glows bright orange as well! hmm. I'm wondering where my 'Empoli' shaped vase was made. I say 'Empoli' shaped because it reminds me a little of this pink one
https://www.glassmessages.com/index.php?action=dlattach;topic=38356.0;attach=64773;image
and
The 'Empoli' shaped vase and the little triangular bowl are the same colour and both glow orange - maybe from the same maker?
Anyone seen anything in the shape of the big yellow vase then?
m
I've just remembered that I think the little yellow bowl and it's blue and green counterpart were I think made by Jablonecke Sklarny ?
Just checked online and all I can find is a set of these little ashtrays that look similar by Vaclav Hanus for Jablonecke Sklarny apparently. Mine are not ashtrays (no indents, just a really well designed counter wave rim).
https://www.worthpoint.com/worthopedia/vintage-set-bohemia-colored-glass-17341277
So that's possibly where the little triangular bowl comes from but I don't really think the vase was from there. It's mold blown and has a slightly pattern base from the mold design.
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My Medusa was not the best made piece I have ever seen. I had very much doubted a WMF attribution because of that. The pontil scar was not properly round. I've found a pic, but I don't have the piece any more. It was definitely WMF Medusa.
But now, I'm wondering if it was my imagination about the uv orange glow rather than reality.
:-[ ??? ::)
The pic appears to be dreadful too! sorry.
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Yes same shape as mine. I love mine - I'm sure it's Loetz Schaumglas or WMF Medusa. But I'm not sure which one.
m
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I was able to compare it with a Loetz Schaumglas piece I have in white. The WMF had solid patches of the white frothy surface decor, while the Loetz decor was in a crizzle style pattern all over.
The Loetz is more finely blown, the WMF rather chunky and even a bit clunky in comparison.
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Then probably WMF. Thank you! :)
m
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Just occurred to me. Webbs and Stevens & Williams Cameo. You get a lot of yellow cameo glass so it is perhaps the cost of producing yellow glass that is the main factor.
Too expensive to produce for mass market in comparison to other colours?
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Thanks :) That's a very good point.
m
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John Walsh Walsh's primrose is uranium over white, no amber involved and no cadmium, as is Webb's primrose
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Webb's Primrose? not seen that.
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Empoli type balloon glass...tis yellow
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I'm looking at transparent yellow glass though EW. I'm curious about the cameo stuff. It is indeed a yellow base glass with white cut overlay cameo. Sadly I don't own a piece ;D so can't check if it was made with uranium rather than cadmium.
I had a straight tube like cylinder vase that looked very like that colour goblet shape though. Needed it for a display group but it never quite worked for me. It had a sticker on the base 'made in Taiwan'. Also had a red one with made in Taiwan on with a stem which I broke ::)
Lustrousstone - thanks, I'd completely forgotten they were coloured with Uranium glass.
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From a graduated set of 3. Decent authentic wear to base. Not Uranium glass.
Top is 2 part moulded and jar has top rim folded over. Base slightly concaved, no poltil mark.
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That's a very similar colour. Does it glow orange under blacklight? - just interested to know really. Thanks.
m
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I've just remembered that I think the little yellow bowl and it's blue and green counterpart were I think made by Jablonecke Sklarny ?
Just checked online and all I can find is a set of these little ashtrays that look similar by Vaclav Hanus for Jablonecke Sklarny apparently. Mine are not ashtrays (no indents, just a really well designed counter wave rim).
https://www.worthpoint.com/worthopedia/vintage-set-bohemia-colored-glass-17341277
So that's possibly where the little triangular bowl comes from but I don't really think the vase was from there. It's mold blown and has a slightly pattern base from the mold design.
Or could the triangular bowl be HÄRANSILMÄ by Kaj Franck for Nuutajavi Notso (1956)? I have a teal coloured one, but other colours are here https://www.selency.co.uk/product/sMSTHjS/haransilma-bowls-kaj-franck-nuutajarvi-notsjo-1956.html (https://www.selency.co.uk/product/sMSTHjS/haransilma-bowls-kaj-franck-nuutajarvi-notsjo-1956.html) and here https://www.1stdibs.com/furniture/dining-entertaining/bowls/kaj-franck-nuutajarvi/id-f_313965/ (https://www.1stdibs.com/furniture/dining-entertaining/bowls/kaj-franck-nuutajarvi/id-f_313965/)
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thanks Anne but no it's not those. I've had quite a few of those over the years. It's chunkier and larger and I'm pretty sure it's the same as the Vaclav Hanus Bohemia Glass labelled ashtrays - but it's not an ashtray.
Thank you for the ideas though.
m
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Yes, Jablonec did make a bigger triangular one, I have one of those too M, but from what I can see of yours it's not the same as your yellow one. Frantisek Peceny also made a similar shape - as a fruit set and as an ash tray, perhaps that's the one you're thinking of? Chris Harrison has the ash tray version in blue - see http://www.glassmessages.com/index.php/topic,7604.0.html (http://www.glassmessages.com/index.php/topic,7604.0.html) and I have the large serving bowl also in blue in that pattern. And I've just found a different small blue one in my Czech folder which Marcus ID'd for me as SU production as well years ago. I'll add images so you can compare with yours...
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Thank you for trying to help Anne.
It isn't like those though. It's an offset triangle exactly like these I linked to, except it doesn't have a notch for the cigarette:
https://www.worthpoint.com/worthopedia/vintage-set-bohemia-colored-glass-17341277
And it's bright yellow. I also had a bright blue one. I remembered Jablonec out of the blue and then looked it up so I'm pretty sure that somewhere in my memory I had that down as Jablonecke Sklarny for some reason. I'll need to do some searching to try and find a direct match and not an ashtray.
m
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Anne, just for closure on the triangular bowls, these were they.
Jablonecke Sklarny as is my yellow one :)
https://www.glassmessages.com/index.php/topic,30477.msg165035.html#msg165035
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Taking photos of some glass I aquired through the last years I found this Karcag vase again.
It is very yellow 8)
Michael
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That's the perfect lemon yellow. A really good clear yellow. Possibly helped by the light that transmits through the crackle shards as well.
m