Topic: Help ID this uranium Vase Not baccarat?

[Trebor]

Hi
Can any one please help ID this vase . I think i have seen similar on one of my reference sites but can not find it.But that one had a black rim and was Baccarat . I am not saying this is ,just that was the nearest i could find to it. It is Uranium stands 118mm tall ,and 134mm, across the rim. It has a polished pontal mark and some wear to the base. Thank you 

[Lustrousstone]

Are you sure it's uranium? Have you tested it with a UV light?

[Trebor]

Hi Christine
Yes but it dos not show up on the camera and is more yellowish than green.

[Lustrousstone]

If the glow is yellowish, then it's not uranium. It has to be bright green.

[Paul S.]

might this be another possible Baccarat opaline piece.......  it has a similarity to the small jug here...
http://www.glassmessages.com/index.php/topic,50027.msg284131.html#msg284131

[Trebor]

I have a number of picese of uranium and all go green .I think i read if it gos yellow it has manganese in it? Yes Paul it looks like it especally the base , thank you both. 

[Paul S.]

I think from memory that a yellow/orange glow indicates cadmium.      The presence of manganese in clear glass, will show, usually, as a dull greyish green  -  not at all the bright green that you'd get if uranium is present.          Manganese is a decolourant, and is apparent in clear glass for the obvious reason of counteracting the colour produced by iron impurities in the sand.
However, the use of a uv torch is essential to detect the presence of manganese  -  unlike uranium which can be detected in the bright morning or late afternoon sunlight - and according to Dirk by turning the television on
this is a nice piece by the way.

[Trebor]

Thank you Paul that makes sense has it is only at the thicker part of the base that the colour changes under uv and my wife says is a lighter green and not yellow.