The Workerman
Cobalt
Day - 27 - Cobalt
Before the 19th century, the predominant use of cobalt was as pigment. Since the mid-age, the production of smalt, a blue colored glass was known. Smalt is produced by melting a mixture of the roasted mineral smaltite, quartz and potassium carbonate, yielding a dark blue silicate glass which is grinded after the production. Smalt was widely used for the coloration of glass and as pigment for paintings.
This is a glass bottle with a cork stopper and hang tag...yea!
Cobalt
Day - 27 - Cobalt
Before the 19th century, the predominant use of cobalt was as pigment. Since the mid-age, the production of smalt, a blue colored glass was known. Smalt is produced by melting a mixture of the roasted mineral smaltite, quartz and potassium carbonate, yielding a dark blue silicate glass which is grinded after the production. Smalt was widely used for the coloration of glass and as pigment for paintings.
This is a glass bottle with a cork stopper and hang tag...yea!