Glass Discussion & Research. NO IDENTIFICATION REQUESTS here please. > Malta Glass

Exceptionel mdina obalisk.

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mdina glass:
This arrived in the post today and i am amazed at how large and heavy the item is.
I knew when I bought it this week it was large but not this size.
It is a little over 13inch tall and a little over 3inch wide and has a weight of 2.75kg.
It has a lot of silver oxide and nitrate in the glass which is hard to take photo of and has a very dark green base.
I am aware that the books state that obelisk were late 75 and small but im sure this one is not for the tourist trade due to size and weight.
could this prob be an early one?or one made to order.
Any help much appreciated.
Regards Kev.

mdina glass:
My pictures are sideways umm strange.

catshome:
They do turn around when you tap them Kev.  Can't help with any of your questions, but I'd like to be first in the queue when you run out of window sills please.😺

mdina glass:
I have ran out of places to display a long time ago so have to change things around from time to time in order to enjoy my glass.
I tap photos they just enlarge for me but don't turn around lol.
Regards Kev.

chopin-liszt:
Silver oxide is the black stuff that accumulates on bare silver.
It can't possibly be that chemical form of silver in your glass.  ;D

The salts used were silver chloride and silver nitrate. The silver and the other ion come apart in the heat of the metal, silver ions and chlorine gas are released. (I'm not sure what the nitrate turns itself into.) The metal ions react with the hot metal, giving rise to colours which depend on the exact temperature of the hot metal.
What silver and glass can do together is extremely complicated.

When you find an electric blue "haze" in a thick casing - that comes from silver metal ions, floating, dispersed in the glass.

Silver can go both blue and yellow with glass. It turns yellow glass, green; clear glass, yellow; and red glass, brown.

And even silver nitrate and silver chloride salts behave very differently. Silver chloride melts directly from the crystals into a liquid in heat.
Silver nitrate is a white crystal that sucks water out of the air and burns everything it comes into contact with.
Both are really difficult things to handle and are also very expensive.

I do suspect your new obelisk is a rather unusual one, yes. But I haven't paid too much attention to them, they're too much like paperweights which I try to avoid. :)

I've got glass on the frames in my windows, as well as on the sills. ;D
Don't forget the top of the loo and tops of kitchen cupboards, the corner in the turn of the stairs, under the shelves... and don't bother with a flat screen tv. It's absolutely useless for putting stuff on.  ;D

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