Mixed Selection of 17 Vintage Large Cobalt Blue Glass and Silver Pieces
Mixed Selection of 17 Vintage Large Cobalt Blue Glass and Silver Pieces - Collected over the last 35 years - All items in very good order!
*Available for Free Collection from Clonsilla or Ashbourne*
**All Genuine Offers Considered**
Cobalt glass for decoration:
Cobalt glass—known as "smalt" when ground as a pigment—is a deep blue colored glass prepared by including a cobalt compound, typically cobalt oxide or cobalt carbonate, in a glass melt. Cobalt is a very intense glass colorant and very little is required to show a noticeable amount of color. Cobalt blue glass is also used as an optical filter in flame tests to filter out the yellow flame caused by the contamination of sodium, and expand the ability to see violet and blue hues.
Cobalt glass such as Bristol blue glass is appreciated for its attractive color and is popular with collectors. It is used in the distinctive blue bottles of Harvey's Bristol Cream sherry and Tŷ Nant mineral water.