- Blue pigment - A deep blue pigment or coloring material used in various
arts. It is a vitreous substance made of cobalt, potash, and calcined
quartz fused, and reduced to a powder.
- A deep blue colour - Blue hue - Blue pigment - Deep blue - Light silvery element - Metallic element - A tough, lustrous, reddish white metal of the iron group,
not easily fusible, and somewhat magnetic. Atomic weight 59.1. Symbol
Co.
- A pale blue pigment, prepared from the native blue carbonate
of copper, or from smalt; -- called also blue bice. - A cold north wind which prevails on the northern coasts of
the Mediterranean and in Switzerland, etc.; -- nearly the same as the
mistral. - See Bice.
- A green or blue pigment produced by Peziza in certain
kinds of decayed wood, as the beech, oak, birch, etc., and extracted as
an amorphous powder resembling indigo.
- A pigment obtained, usually by roasting cobalt glance with
sand or quartz, as a dark earthy powder. It consists of crude cobalt
oxide, or of an impure cobalt arseniate. It is used in porcelain
painting, and in enameling pottery, to produce a blue color, and is
often confounded with smalt, from which, however, it is distinct, as it
contains no potash. The name is often loosely applied to mixtures of
zaffer proper with silica, or oxides of iron, manganese, etc.