Topic: Hope anyone knows who made this candle holder?

[SveziaJonas]

Hello,
I hope too find out who made this, I think it is a candle holder or small bowl.
It is 14 cm high, 9,5 cm in diameter.
It has a solid fot with polished puntel mark.
The top is green, almost florocent with small bubbles.
The foot is glowing orange under UV- light, mangan oxid?
Regards
Jonas

[SveziaJonas]

Hello all,
I have still not found anything about this object.
Anyone have any idea to point out?..
I have not seen anything in Sweden like it, maybe Finnish?
I don't know....
Regards
Jonas

[chopin-liszt]

Manganese glows with the same green as uranium, but not nearly so strongly - it's faint.
I think it might be selenium that glows orange.
It does look a very "Scandanavian shape", but I've never seen anything quite like it before.

[SveziaJonas]

Hello Sue,

Thanks for your input.
I think it is Scandinavian but I have not seen any one alike either.
I attach a picture with UV light.
Regards
Jonas

[Ailurophile]

I can't help with the actual id but the colourant is at least mainly manganese which most typically fluoresces a rather brilliant orange under UV.   A rather dim dull green (not a vivid screamingly fluorescent green) is generally just soda glass i.e. glassware made using sodium rather than lead (usually blue under UV)

[chopin-liszt]

Manganese was used as a decolourant, and glows a faint green.
Soda glass does not glow at all.
A layer of dust will glow a similar faint green.

Where did you find anything that told you otherwise, Ailurophile? I believe it is mistaken.

[Lustrousstone]

I think it's either selenium or cadmium (or both) that gives an orange glow and a yellow colour. Manganese used in sufficient quantity gives purple; otherwise it's a decoloriser. It's also glows a dull green under UV.

[Ailurophile]

I think a lot of the issues of colour relate to colour mixing & the light wavelength when viewed.   http://uranglass.gooside.com/kantei/color.htm  is quite informative regarding Manganese & UV.  I expect the colour visualised also relates to the molecular form of the Mn &, indeed, other glass colourants.  Then again, the situation is probably further confounded by the ~10%  of European males who have some form of red-green colour blindness

Yuk, horrible font choice first.  I think I've revised to Verdana but perhaps a moderator could please do that if it hasn't worked!

[chopin-liszt]

I can't read that at all.  (I have my own difficulties with vision).
Is it a quote from somewhere?

When something glows under uv, it's difficult to mistake the colour. It tends to be very bright.
Is there a chemist in your link stating that manganese might go orange?
I've certainly never, ever heard of that.
It's repsonsible for sun-purpling, or (as Christine says) purple coloured glass; it neutralises a nasty yellowy green that can appear if iron is present in clear glass, and glows a faint green under UV.


edited to add.
I found a link buried in your wonky text after much peering and had a look.
I don't know who wrote it, or what authority or qualifications that they have, or what their level of knowledge is.
They do talk a lot about "vaseline" glass - that's a purely american term.
I suspect the writer of the blog is just mistaken about manganese glowing orange.

[SveziaJonas]

Hello,

Thank you all for input..
Interesting with all different metels and oxid for coloring.
/Jonas