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Glass Discussion & Research. NO IDENTIFICATION REQUESTS here please. => British & Irish Glass => Topic started by: orangeglass on September 02, 2014, 03:56:43 PM

Title: Another Uranium Monart
Post by: orangeglass on September 02, 2014, 03:56:43 PM
One of my latest - shape OF size VII - 6.75 inches high.

Haven't managed to photograph under UV yet to show the uranium content - I think the glass itself  (very yellow) contains uranium and also has it in one of the green enamels.

It has the same "coppery" sparkle (lots of tiny bubbles) as my FA shape uranium one and the cylinder in Perth museum.
It also has the "veining" pattern, 2 shades of green and a pinky red colour as big "splodges". Lots of bubbles of all sizes, thick heavy glass and a few annealing cracks.

Have you got one in a similar colour Gary or is yours not as yellow and with orange splodges?
I'm sure I've seen another one in this colourway somewhere ?

I personally think this is an earlier piece, but have no evidence of this!  :D

Roberta


 
Title: Re: Another Uranium Monart
Post by: Gary on September 02, 2014, 04:35:23 PM
Is that the one that was on ebay, described as possibly Monart.
I believe it is a pre war piece and a nice example of that type of decoration.
I have a bowl with that type of decoration with yellow and orange splashes and a vase with blue and purple splashes.
Gary
Title: Re: Another Uranium Monart
Post by: chopin-liszt on September 02, 2014, 04:35:58 PM
 8)
That does look as if it is going to glow like billy-o!

How many spies have you got out there, seeking Uranium Monart?  ;D

Honestly - you have so much of it!

My brother and his partner who collected for years don't have anywhere nearly as many pieces of uranium Monart as you do!
They weren't looking out for it in particular - only got a surprise one when a UV light was turned on their collection and they found a few.
Title: Re: Another Uranium Monart
Post by: orangeglass on September 02, 2014, 04:46:16 PM
Hi,
Yes Gary it is that one! Well spotted!
Coincidentally I had to go over that way anyway and got a reasonable amount of the price!

It's a grand total of 4 pieces with uranium, but one of those only has it a bit of it in the green enamels splodges!

I do love this sort of Monart  ;D ;D (but my O.H. is still worried about the uranium - says he's getting a Geiger counter  ;) )
Title: Re: Another Uranium Monart
Post by: chopin-liszt on September 02, 2014, 04:55:29 PM
Geiger counters are only about 10% efficient. It takes a LOT of radioactivity to make one tick.
A UV torch will suffice. :)

The kind emitted by the uranium in glass can be stopped by a sheet of paper - no need for full lead armour!
Also, the radioactive material stays in the glass.
It's only dangerous if you inhale glass dust from it.
Title: Re: Another Uranium Monart
Post by: orangeglass on September 02, 2014, 05:07:14 PM
I keep telling him it's safely sealed inside the glass !

I must remember now though not to break any  ;D ;D

Roberta
Title: Re: Another Uranium Monart
Post by: chopin-liszt on September 02, 2014, 05:15:34 PM
Even if you do, it is easy to find every single last tiny sliver. Turn out the lights, get your uv torch on.
A damp bar of soap can be used to pick bits up, saves you risking your fingers.
Title: Re: Another Uranium Monart
Post by: orangeglass on September 02, 2014, 09:12:48 PM
Photo under UV light - best I can manage!
Title: Re: Another Uranium Monart
Post by: chopin-liszt on September 03, 2014, 08:45:25 AM
 :o

It doesn't look as if it is really glowing at all. ???
Title: Re: Another Uranium Monart
Post by: orangeglass on September 03, 2014, 10:21:50 AM
No, not as much as it looks like it should do  ??? - it just turns green! but I only have a small UV torch so maybe I'll get a bigger one and try with that!

Roberta
Title: Re: Another Uranium Monart
Post by: chopin-liszt on September 03, 2014, 10:30:47 AM
I think that could just be manganese. I am surprised though. :-\
Title: Re: Another Uranium Monart
Post by: Lustrousstone on September 03, 2014, 10:43:13 AM
If you can stand 2 ft away and see a glow in daylight even with a small torch it's most likely uranium
Title: Re: Another Uranium Monart
Post by: orangeglass on September 03, 2014, 11:30:39 AM
Okay, here is picture in daylight with the UV torch inside it - you can see the light shining through the vase as green  - not purple/blue.
The inside seems to be a glass containing uranium (?) throughout it, but the outer casing does not.
One of the green enamels shows up really green whereas the other turns purple/blue under UV.

Any suggestions?

Roberta
Title: Re: Another Uranium Monart
Post by: KevinH on September 03, 2014, 04:53:29 PM
Try checking just a piece of clear glass such as on the rim or edge of the base. If you can find clear glass that is not refracting any other colour, then the UV reaction of that part should be a yellow-green (typical for Monart of all periods) and may be quite bright, but not as bright as a "uranium UV reaction".

If there is a definite difference between the clear glass reaction and the possible uranium glass reaction, with the uranium reaction being much brighter than than the other, then I think you are on a winner.

Simple isn't it? Not really!
Title: Re: Another Uranium Monart
Post by: orangeglass on September 03, 2014, 07:30:32 PM
All I can add is that if I shine UV on the outside it relects purple - if I shine it through it shows as green.
my FA shape does something similar but has an incredibly strong green glow which this vase doesn't, but this glass is much more yellow in colour - does this mean it might be manganese (?) rather than uranium?

It does look like it should really glow but it doesn't,  but there is definitely something in the glass  ???

Roberta
Title: Re: Another Uranium Monart
Post by: Lustrousstone on September 03, 2014, 07:39:12 PM
Much more yellow doesn't mean more manganese. Concentrated manganese gives purple. I can't tell from your pictures. Try an edge picture with your torch shining done into the edge and one with the edge receiving direct bright light through a window.
Title: Re: Another Uranium Monart
Post by: chopin-liszt on September 03, 2014, 07:47:15 PM
Remember to stick your tongue out, cross your eyes and hop on one foot while doing it! ;)
Title: Re: Another Uranium Monart
Post by: orangeglass on September 03, 2014, 08:15:14 PM
I think I'm doing the first two!!  ;D ;D ;D ;D
Title: Re: Another Uranium Monart
Post by: millarart on September 03, 2014, 09:33:43 PM
seen this on ebay bought from auction house a few weeks ago for 30 bucks oh so cheap , auction house listed it as perfect though stress fractures in middle layer of glass at neck,  but way too cheap at 30 , very nice piece , I thought it might have made more on ebay , how times have changed , 8 years back this would have made 500 plus in perfect condition and probably 250 plus with damage , nice piece well done
Title: Re: Another Uranium Monart
Post by: millarart on September 03, 2014, 09:42:09 PM
oh also I remember  a few years back now Mary James had a large footed vase or bowl that that glowed strongly with the uv lamp, and there was a few other pieces in folks collection that also glowed, I think Nigel Benson may have been involved but its that long ago I cant remember everyone who was involved , Keith Barraclough may have been another as I know he had a bowl that glowed really good under uv lighting , 
Title: Re: Another Uranium Monart
Post by: orangeglass on September 03, 2014, 10:39:56 PM
Hi ,

I've seen pictures of the one Nigel had - a bowl - not sure when that actually was! I know the other Gary has some pieces.
Didn't see the one I've got come up at auction -which house was it?  was that really all he paid for it!
I paid a reasonable amount less then was listed on ebay but it was collection only which probably put a few people off!
For those who haven't seen my other ones - here's a quick peek!

Roberta
Title: Re: Another Uranium Monart
Post by: Gary on September 05, 2014, 05:46:16 PM
Roberta could you add an image of your vase to the thread on Monart uranium glass, link below.
http://www.glassmessages.com/index.php/topic,41564.msg230348.html#msg23034
Gary
Title: Re: Another Uranium Monart
Post by: orangeglass on September 05, 2014, 06:55:24 PM
Hi, When we've clarified what's in it I will !!  ;D ;D