Author Topic: Blue smokey swirls with bubbles  (Read 649 times)

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Offline Fiver

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Blue smokey swirls with bubbles
« on: January 25, 2012, 04:14:23 AM »
This one is 2 7/8" inches at its widest point, 4 1/2" tall with a 1 1/4" base.  No markings on the base.


Offline Fiver

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Re: Blue smokey swirls with bubbles
« Reply #1 on: January 25, 2012, 07:04:17 PM »
Here's a base shot of this weight.



Offline Lustrousstone

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Re: Blue smokey swirls with bubbles
« Reply #2 on: January 25, 2012, 07:07:32 PM »
It's probably modern Chinese. Those matte bottoms often (but not always) indicate Chinese


Offline scavo

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Re: Blue smokey swirls with bubbles
« Reply #3 on: January 25, 2012, 08:24:53 PM »
What are the little pin-pricks on the base? I've seen those before and have left on the shelf assuming that if it were good quality they would have been ground away.


Offline Lustrousstone

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Re: Blue smokey swirls with bubbles
« Reply #4 on: January 26, 2012, 07:41:47 AM »
They are probably remnants of the pontil scar, but those in themselves are not an indicator of poor quality. You can find them on highly polished bases; you can only remove so much of the base without ruining the item.


Offline scavo

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Re: Blue smokey swirls with bubbles
« Reply #5 on: January 26, 2012, 08:29:06 AM »
Thanks Christine,
I've seen very similar before. There are 3 in this pic and the pattern suggests 4 (tool) marks originally.
Good to know that I have to rely on other knowledge before dismissing other items in the future!


Offline Lustrousstone

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Re: Blue smokey swirls with bubbles
« Reply #6 on: January 26, 2012, 12:25:58 PM »
They are not tool marks. Paperweights are made on the end of a glass rod and when the item is cracked off what remains is the pontil scar/mark. It may be a lump; it may be a hole.


Offline Sach

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Re: Blue smokey swirls with bubbles
« Reply #7 on: January 26, 2012, 12:36:02 PM »
What are the little pin-pricks on the base? I've seen those before and have left on the shelf assuming that if it were good quality they would have been ground away.

From what I can see those "pin-pricks" are just air bubbles within the glass that were opened when the bottom was ground away.  A little more grinding might well remove them, and is likely to cut open more bubbles in the next layer of the glass.


Offline Lustrousstone

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Re: Blue smokey swirls with bubbles
« Reply #8 on: January 26, 2012, 12:42:28 PM »
Or that  ;)


Offline KevinH

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Re: Blue smokey swirls with bubbles
« Reply #9 on: January 26, 2012, 05:41:04 PM »
Or maybe even bits of grit (or similar) in the annealing oven that have caused indentations which were deep enough to partly remain after grinding. Possbly?
KevinH

 

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