opalescent cockerel by Sabino
above: Opalescent
cockerel by Sabino



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Opalescent Glass from
The Glass Encyclopedia

A short explanation of Opalescent Glass:

There are three kinds of glass which are called "Opalescent". One is the blue-tinged semi-opaque or clear glass with milky opalescence in its centre, typical of Lalique, Sabino, and Jobling's. The colour is produced by the slower cooling of the molten glass in those parts which are thick, causing some crystallization inside the glass. This kind of glass glows a golden colour when light shines through from behind it, and a beautiful blue when light shines onto the surface from the front. During the 1920's and 1930's there were many companies in France who made beautiful opalescent art deco creations. Amongst the best known were Lalique, Sabino, Etling, Verlys, Hunebelle, Dieupart at Simonet Brothers, Cesare, Daniolo, Ferjac, P. D'Avesn, Martel. Vernox and Verart were two trade names from Sabino to compete with the cheaper opalescent glass from Verlys, and Verlux was another French trade name of the time. In other coutries Barolac in Bohemia, Joblings in England, and Val St Lambert in Belgium were also producing beautiful pressed opalescent glass in the 1930's.

The second kind of opalescent glass has a milky white edge or a white raised pattern decorating a coloured pressed glass item. This effect is produced by re-heating parts of the molten glass when it has just started to cool, and heat-sensitive chemicals in the glass turn the re-heated sections white. The easiest way to do this is to present the newly pressed glass item back to the "glory hole" or furnace entrance, and those parts nearest the heat turn white.

The third kind of opalescent glass is hand blown and was normally made from two layers of glass. The outer layer contained heat reactive components such as bone ash. The two-layered piece was blown into a mould with the raised pattern impressed into the metal. After removing the mold, the piece had a raised pattern comprised largely of heat sensitive glass, which turned milky white when reheated. This left the white pattern like a silhouette against the usually clear background.

If you are looking for Opalescent glass, you can usually find items on offer on ebay (click here to see Opalescent glass listings on ebay).


The items below are for sale right now on eBay - we thought you would like to see these examples.





Here are some books on Opalescent glass that you may find helpful. Click on any book cover to read more about that book.
Opalescent glass CD Opalescent glass revised Opalescent glass book Arwas glass book Cranberry Opalescent book Uranium glass book Vaseline glass book Lalique book




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INFORMATION about Bagley Glass!
At last a book on Bagley Glass. The first edition of this book sold out very quickly.

The 2nd Edition is now available and has received a rave response - more information, more and better pictures, new items identified as Bagley for the first time, a helpful index, and more compehensive coverage; - so much so that there is no need for a supporting CD, which brings the price lower! A truly comprehensive guide to help you identify Bagley Glass.
Click on picture for more details.
2nd Edition US$33.90 plus pp.


New Zealand Glass book
INFORMATION about New Zealand Glass !
Including many original catalog pictures and dozens of photographs.
NOW available - this is the first paperback edition of the book
and it covers many contemporary New Zealand glass artists as well as
the history of glass in New Zealand, Crown Crystal Glass and New Zealand bottles.

Price US$29.90 plus pp.




Tiara Glass Collectors' INFORMATION


Click on the picture for more details.
This CD includes original catalogs and advertising leaflets.

There are now at least seven full catalogs, five leaflets, and the 1995 Tiara Product Information Manual.





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