1. 
   opal glass
   [n] - a milky white translucent or opaque glass
   Found op http://www.webdictionary.co.uk/definition.php?query=opal%20glass
   
   
2. 
   opal glass
   Translucent white glass developed in 17thC Venice and later made throughout Europe. It was particularly popular in Britain during the 19thC for cheap ornamental wares. translucency was achieved by adding bone ash to the molten glass. When held up to the light, the glass shows slight reddish tones.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   opal glass
   milk glass noun a milky white translucent or opaque glass
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=opal%20glass
   
   
4. 
   opal glass
   (from the article `industrial glass`) ...basic formula other ingredients may be added in order to obtain varying properties. For instance, by adding sodium fluoride or calcium fluoride, a ...
   Found op http://www.britannica.com/eb/a-z/o/22
   
   
5. 
   opalescent glass
   1A specific type of iridescent glass developed by the British glass-maker Frederick carder for the steuben glassworks in the USA. Its appearance, similar to that of a natural opal, was created by cooling the glass object with compressed air and then reheating it. The glass was produced in pink, blue...
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
6. 
   opalescent-glass
   Its appearance, similar to that of a natural opal, was created by cooling the glass object with compressed air and then reheating it. The glass was produced in pink, blue, yellow and green.
   Found op http://www.antique-marks.com/antique-terms-o.html
   
   
7. 
   opaline glass
   usually opaque glass or crystal, either white or coloured, made in France between approximately 1810 and 1890. Opaline resembles the milk glass of ... [1 related articles]
   Found op http://www.britannica.com/eb/a-z/o/22
   
   
8. 
   Opaline glass
   The term "opaline" in current times refers to many forms of opaque and colored glass. In France the term opaline is used to refer to multiple types of glass and not specifically antique colored crystal or semi-crystal. The idea that the term opaline is strictly antique French crystal is a misnomer....
   Found op http://en.wikipedia.org/wiki/Opaline_glass
   
   

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