No-one likes general adverts, and ours hadn't been updated for ages, so we're having a clear-out and a change round to make the new ones useful to you. These new adverts bring in a small amount to help pay for the board and keep it free for you to use, so please do use them whenever you can, Let our links help you find great books on glass or a new piece for your collection. Thank you for supporting the Board.

Author Topic: Do these qualify as chalcedony glass?  (Read 2636 times)

0 Members and 1 Guest are viewing this topic.

Offline Ivo

  • Author
  • Members
  • ***
  • Posts: 8175
  • Gender: Male
Do these qualify as chalcedony glass?
« on: May 01, 2012, 10:19:55 AM »
The chalice is 5"=12,5 cm high and ditto across; the base colour is silver nitratre amberish. No idea how the pontil mark was finished - it seems to be etched over.

The bottle is nearly 6" (14,5 irl)  and quite lightweight. The neck is folded inward, the pontil mark is small and untreated.


Support the Glass Message Board by finding a book via book-seek.com


Offline flying free

  • Members
  • **
  • Posts: 8654
    • UK
Re: Do these qualify as chalcedony glass?
« Reply #1 on: May 01, 2012, 02:06:40 PM »
Is there a formal definition of 'Chalcedony' glass? or how it is made.  I thought it was glass made to resemble stone?
there are a couple of pieces to the left of the piece on this link if you flick through.
I think these pics might be from the Corning
http://www.flickr.com/photos/unforth/3277669304/in/photostream/
m

Support the Glass Message Board by finding glass through glass-seek.com


Offline flying free

  • Members
  • **
  • Posts: 8654
    • UK
Re: Do these qualify as chalcedony glass?
« Reply #2 on: May 01, 2012, 02:10:35 PM »
http://www.gardnerandbarr.com/gallery.htm
This one has similarities with your second piece in terms of decor.
m

Support the Glass Message Board by finding a book via book-seek.com


Offline Paul S.

  • Members
  • **
  • Posts: 7266
  • Gender: Male
Re: Do these qualify as chalcedony glass?
« Reply #3 on: May 01, 2012, 02:13:28 PM »
I'd typed this just prior to m posting..........so some of the information may now have been superseded, but I'll let it run.........

"quite probably, but the bottle more so than the chalice in my opinion, from looking at the pictures  -  the qualification being that the glass must replicate semi-precious stones such as onyx, agate, jasper, and of course chalcedony.    My dictionary says it should be opaque, but when cut a little thin, most of these natural materials are sometimes translucent.       I get the impression that the surface should be reflective (i.e. shiny)  -  the chalice looks matt from my angle.    There are various web sites giving definitions  -  some with images."

Support the Glass Message Board by finding glass through glass-seek.com


Offline flying free

  • Members
  • **
  • Posts: 8654
    • UK
Re: Do these qualify as chalcedony glass?
« Reply #4 on: May 01, 2012, 02:18:25 PM »
http://www.gardnerandbarr.com/glossary/chalcedony.htm
Gardner and Barr page on Chalcedony glass
I'm not sure I'd say the top piece was Chalcedony Ivo, and the bottom one looks a little 'transparent'.
m

Support the Glass Message Board by finding a book via book-seek.com


Offline johnphilip

  • Members
  • **
  • Posts: 2617
  • Gender: Male
  • JP
    • England
    • eBay ID
Re: Do these qualify as chalcedony glass?
« Reply #5 on: May 01, 2012, 02:29:18 PM »
Hi Ivo i have emailed you . :-X i will give you a few quid for one of them then i will have a pair . . ;)

Support the Glass Message Board by finding glass through glass-seek.com


Offline Paul S.

  • Members
  • **
  • Posts: 7266
  • Gender: Male
Re: Do these qualify as chalcedony glass?
« Reply #6 on: May 01, 2012, 02:46:17 PM »
m, we should have hyped them up more to increase the value, and got a commission. ;D

Support the Glass Message Board by finding a book via book-seek.com


Offline flying free

  • Members
  • **
  • Posts: 8654
    • UK
Re: Do these qualify as chalcedony glass?
« Reply #7 on: May 01, 2012, 03:07:11 PM »
ok,  well I need to know what they are now.  Are they chalcedony pieces?  are they 19th c Italian?
m

Support the Glass Message Board by finding glass through glass-seek.com


Offline johnphilip

  • Members
  • **
  • Posts: 2617
  • Gender: Male
  • JP
    • England
    • eBay ID
Re: Do these qualify as chalcedony glass?
« Reply #8 on: May 01, 2012, 04:55:47 PM »
Hi M the bottom one is British circa 1890/1900  in my ever so humble opinion . jp ;) Not Chalcedony .

Support the Glass Message Board by finding a book via book-seek.com


Offline flying free

  • Members
  • **
  • Posts: 8654
    • UK
Re: Do these qualify as chalcedony glass?
« Reply #9 on: May 01, 2012, 05:08:55 PM »
Clutha?

Support the Glass Message Board by finding glass through glass-seek.com


 

Look for glass on
 ebay.co.uk 
Look for glass on
 eBay.com (US)

Link to Glass Encyclopedia
Link to Glass Museum


This Website is provided by Angela Bowey, PO Box 113, Paihia 0247, New Zealand