Cobalt Blue Glass

Cobalt Blue Glass can functional as an optical filter, which can filter out the unsought strong yellow light. This is a prized material for several collectors. It is functional as a practical application for scientists who perform the flame tests. Cobalt blue glass has a deep rich blue color. It has been made by making use of the cobalt oxide in the mixture of molten glass. Cobalt Blue Glass gets its color from copper oxide or cobalt oxide. This is functional as a delicate colorant and offers a deep rich blue color. This is a blue glass that is utilized for hiding the yellow (sodium) emission. It is also known for identifying elements which make weakly emission of blue and/or violet.