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Glass Identification - Post here for all ID requests => Glass => Topic started by: Baked_Beans on March 08, 2014, 05:49:18 PM

Title: Spattered, blue & white, hat-shaped vase with possibly silver chloride ?
Post by: Baked_Beans on March 08, 2014, 05:49:18 PM

I think this is quite ugly  :(   

It does have quite a bit of age to the base though and is heavy. 4 1/4 inches tall and 6 1/2 inches diameter at rim. Any help would be great. Thanks for having a look .

Title: Re: Spattered, blue & white, hat-shaped vase with possibly silver chloride ?
Post by: chopin-liszt on March 08, 2014, 07:35:52 PM

No silver chloride there, just blue and white and browny splodges over a resist kind of base.
(By resist, I mean two enamels which are incompatible used together - that's how you end up with that sort of texture in the background.)
I've seen thes colours used in a resist way by Mtarfa and by Anthony Stern. I don't think your piece is Mtarfa, I couldn't say much about Stern - I don't know enough of his work.

Title: Re: Spattered, blue & white, hat-shaped vase with possibly silver chloride ?
Post by: Baked_Beans on March 08, 2014, 07:47:26 PM

Thanks Sue, is it the lack of bubbles which indicates that it isn't silver chloride ? I thought this might be from somewhere like Bulgaria !?....perhaps ?  ???

Title: Re: Spattered, blue & white, hat-shaped vase with possibly silver chloride ?
Post by: chopin-liszt on March 08, 2014, 08:01:30 PM

No, it's just all the wrong colours.  :)
Silver reacts with clear glass to produce yellows and ochres - the intensity of colour will depend on the concntration of silver present.

Silver nitrate is used to turn red glass brown, but it is still the silver that does the colour thing.

If any silver molecules escape acidentally during the making, they will often deposit on the surface of the piece in what is called "iridesence" (when it comes to Mdina anyway), but it is actually more of a mirror - but blues and yellows may appear because of reactions with glass - it's all stuff that happens in the heat!

It is also silver metal which can produce a sort of electric blue haze in a thick casing.

It doesn't look like normal enamels at all.

Title: Re: Spattered, blue & white, hat-shaped vase with possibly silver chloride ?
Post by: Baked_Beans on March 08, 2014, 08:14:33 PM

Thanks Sue, I didn't know it was silver molecules that produced the iridesence in Mdina  :D

If it weren't for the age on the base of this I wouldn't have bought it .....it was because it's hat- shaped and has age that I was thinking it might be worth looking into but I haven't found anything about this vase anywhere  :(

Title: Re: Spattered, blue & white, hat-shaped vase with possibly silver chloride ?
Post by: chopin-liszt on March 08, 2014, 08:30:47 PM

 :)
It does all sorts of weird and wonderful things, when hot, with glass.

Title: Re: Spattered, blue & white, hat-shaped vase with possibly silver chloride ?
Post by: Baked_Beans on March 08, 2014, 08:45:37 PM

 Yes, it's lovely to see it  :)  ...this brown looks drab and uninspiring    :(