Opaline Glass is a decorative style of glass made in France from 1800 to the 1890s, though it reached its peak of popularity during the reign of Napoleon III in the 1850s and 1860s. The glass is opaque or slightly translucent and has a high lead content which defined it as "demi-crystal" or semi-crystal.
All opaline glass is hand-blown and has a rough or polished pontil on the bottom. There are no seams and no machine engraving. Most all opaline glass is not branded or signed.
Portieux Vallerysthal made lots of robin's egg blue glass they call Opaline.
I recently acquired two sets of champagne/sherbet glasses.
A set of 6 and a set of 8, both in mint condition.
~ $120 for the Set of 6 ~
~ $160 for the Set of 8 ~
Both Sets Sold