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41
Glass / Re: wine, custard, tumbler and Richardson White Opaline.
« Last post by Paul S. on December 05, 2021, 05:28:34 PM »
hmm - no idea why then.      Send me the same (via the Board) with your personal email address  -  this was what I had done, since it seems the Board's pm system doesn't allow for attachment of pix.

thanks for the vase sizes  -  'Pompeiian red infill' I like.
42
Glass / Re: wine, custard, tumbler and Richardson White Opaline.
« Last post by flying free on December 05, 2021, 05:21:27 PM »
I wondered whether you'd decided not to.  Nothing has come through to me unfortunately  :-\

The dimensions of the three vases are

Height 15cm
Height 22cm (one with pompeiian red infill)
Height 25cm (tallest one with the yellowish picture on it)

m
43
Glass Paperweights / Re: Peter Mc dougall weight
« Last post by essi on December 05, 2021, 05:20:21 PM »
Thanks  to Dave and Wuff for the background information on my weight.
For a person not collecting paperweights i seem to have acquired about 30 by now!!
Tim
44
Glass / Re: wine, custard, tumbler and Richardson White Opaline.
« Last post by Paul S. on December 05, 2021, 05:09:52 PM »
thanks - kind of you to research this for me, and heartwarming to see that I'm in good company  -  I used to have the Barbara Morris book - perhaps I too should leave my glass to the nation.          It's unclear as to which piece the height of 15 cm. refers - mine are identical at 20.5 cm., but obviously these things made in various sizes.       Think I prefer the right hand example with the infill of reddish colour. 

I did send you a pm - via the Board  -  I didn't see any reply so presumably it didn't reach you??            I'll try taking the pix completely afresh today or tomorrow, and trying again.   

thanks again for the link. :-*
45
Glass / Re: Cut glass perfume bottle
« Last post by Paul S. on December 05, 2021, 04:54:44 PM »
well, you asked for thoughts, and mine are that it would look good in my cabinet of curiosities ;)

for rather obvious reasons, stoppers in perfumes/scents were usually a very good tight fit  -  there aren't matching Nos. usually on such pieces (unlike decanters) - but for peace of mind check the neck of the body as well as the stopper (and even the underside of the body).                The slightest rock with this stopper might suggest not original, and agree the cutting on the stopper doesn't look to replicate anything on the body.        The main cutting has a central/eastern European look - pin wheels/hob stars etc., whereas the cutting on the stopper could be much older.

What about wear - is there any - and the height will be of interest, though no help with id unfortunately.

As for silver or not  -  try a little silver polish or Brasso  -  if it comes of really black then you're in business. 

The chasing on the collar looks typical of that seen on silver work  -  it doesn't prove it's Sterling at least just looking at the screen, but the colour also makes it possible.

Is there any residue of aroma  -  some of these things, from a hundred years ago, can still give off the smell of a 'flapper' if it was a high end scent  -  all to do with ambergris so I'm told. ;D

thanks for posting  -  have to say that though I now don't have many of these, I'm always a fan. 
46
Glass / Re: Yellow and red Spanish (?) style
« Last post by Paul S. on December 05, 2021, 04:39:59 PM »
thanks for the explanation :)        I agree with you that when in doubt, buy ......... nothing worse that inconsolable regret for things we didn't do - I've been there ............  that's of course assuming the price isn't through the roof. ;D
To be accurate regarding the possibility of u. you would need a u.v torch  -  without it we can sometimes pass over a piece  -  especially opaque type glass like this  -  and not realize it's there -     Sowerby's Patent Queen's Ivory Ware is a good example of that pitfall.   

Age can be deceptive in appearance on glass  -  utility wares will usually show more than a decorative item that may have sat in someone's display cabinet for many decades.     Regret I'm fresh out of suggestions, so will leave to others to try and help  -  very best of luck, and thanks for posting. 
47
Glass / Cut glass perfume bottle
« Last post by Anne E.B. on December 05, 2021, 04:31:14 PM »
Any thoughts about this cut glass perfume bottle would be much appreciated ;).  I'm not sure if the stopper is original, but it fits ok.
The top is a bit unusual, for me at least, as it seems to be sat on the bottle rather like a shoulder and neck.  Again I'm not sure if it is silver as I can't find any markings.
TIA :)
48
British & Irish Glass / Re: Richardson's Vitrified Opaline
« Last post by Paul S. on December 05, 2021, 04:23:37 PM »
thanks - I'm not surprised at this multitude of recipes for 'opal' - an association word that carries with it many of the qualities and attributes of the real thing - it seems to have been a fashionable description for so many glass inventions over the past couple of centuries, to include the word opal.           As to the C19 recipes for 'opalescent' glass, I'm unsure as to the extent of the arsenic content as an opacifier, or as a means of contributing to the  'opal' effect i.e. the sunset sparkle - much of the literature is unclear on this  -  possibly some of each.              Generally, with these C19 products, and for obvious reasons, glass houses were no doubt reluctant to publish details of what went into their pots.

In the U.K., John George Sowerby was responsible for the invention Vitro-Porcelain, and the first colour they produced was a plain white which they called 'opal' (it's a truly opaque material with the appearance of a milk-white opal, so no chance of transmitted light).        I don't see that the ingredients included arsenic, but can't be sure  -  the main content appears to have been cryolite plus some oxide of zinc and the sand  -  no mention of ashes of calcined bones. 

A little later with his Patent Queen's Ivory Ware, he speaks of  "adding to the usual ingredients of common flint glass, arsenic to make the glass opaque, and as we know, he also added uranium to the Ivory batch "to give it the yellow tint".      However, Sowerby appears not to have been happy with this recipe, and later he speaks of improving the appearance of 'Ivory' by dispensing with arsenic and substituting cryolite spar, plus some other ingredients  -  the u. was of course retained.           

So, as with 'Vitro-Porcelain, the main opacifier for Ivory, appears to have been cryolite, since there isn't any mention of arsenic or ashes of calcined bones in the final recipe - again, as we know, Ivory is a fully opaque product, and no chance of any sunset glow with opque products. 

Sowerby continued with his inventiveness and produced Blanc-de-Lait, about which the Pottery Gazette said .....................  "Three years have been spent in experiments on the opalescent product by Mr. Sowerby etc. etc. ......."    it's a mostly translucent glass and according to one observer        .............   "Held up to the light (transmitted light), it shone like opal in a hundred delicate hues, chief amongst which was a glowing yet tawny gold, that suggested the sun shining through a purple mist in evening. "
Unfortunately, I can't see the recipe for Blanc-de-Lait  -  the opacifier may have been arsenic and there may have been ashes of calcined bones added too.       
Someone else said of Blanc-de-Lait   ..........       "it was of a rich, lustrous, milky colour, verging in the thinner portions into that sky-blue which milk assumes when it's vendor has had dealings with 'the cow with the iron tail'"   ..........................    so might it be lead arsenate or cobalt that gives this bluish hue  -  with Jobling, much later, it was the inclusion of cobalt. 

Other than Sowerby, Ray Slack mentions Edward Moore & Co (U.K.) who used calcined oats; or, other calcined cereal; or, vine stalks as ingredients in the opaque batch -  Edward Moore (in Slack) gives an account of his recipes for 'Eau de Nil (soft opaque green (probably nothing like the Nile), and a type of 'caramel brown'.         Moore appears to be saying that he adds these calcined cereals as colouring substances.

Coming forward some decades - and without getting too bogged down in chemistry - but just to show perhaps a more modern take on this issue of opal/opalescence etc.             Jobling produced a very well known product called 'Opalique', the idea for which appears to have had its origins in their lighting bowls - similar to the Chance panels and of course to the famous opalescent products of Lalique in France.                Jobling's translucent light bowls were opacified using phosphate, fluorine and alumina - so no ashes of calcined bones - but amongst a very varied bunch of ingredients they experimented with was white arsenic - plus they included a trace of cobalt which "was successful in producing an attractive blue glass with an inner golden fire (sunset glow), similar to that found in some Lalique products.           
"The density of the opalescence depended on the rate of cooling of the outside relative to the centre:   the opal within cooled more slowly, allowing crystals to form which refracted the light."

Much of the above is taken from the original research work of Ray Slack and of course Baker & Crowe re the Jobling material published in the Tyne & Wear County Council Museums Collectors Guide - and much credit to these authors that their work is publicly available for all of us to read  -  I just do the typing plus the italic bits.                 If you've not seen the Baker & Crowe publication it really is worth getting.

 


49
Glass / Re: Yellow and red Spanish (?) style
« Last post by flying free on December 05, 2021, 04:13:40 PM »
I still think it's possibly uranium glass though.

You'd need a small uv blacklight to check in the dark but I suspect the cream might glow bright green.

m
50
Glass / Re: Yellow and red Spanish (?) style
« Last post by robdb8 on December 05, 2021, 02:55:12 PM »
I do apologize, there really is no green hue, it's just my phone camera and the lighting.  The only colors present are red, yellow, and the slivers of white.
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