Cobalt glass—known as "smalt" when ground as a pigment—is a deep blue coloured glass prepared by including a cobalt compound, typically cobalt oxide or...

was powdered smalt (cobalt glass) used in laundering and dyeing applications, and it then came to be used as a colour name from 1894. Smalt has a deep,...

a pigment. It has been used since the Middle Ages to make smalt, a blue-colored glass. Smalt is produced by melting a mixture of roasted mineral smaltite...

paint. Transparent glasses are tinted with the silica-based cobalt pigment "smalt". Ores containing cobalt have been used since antiquity as pigments to give...

red porphyry are placed. Next to the pilasters are bands of bright red smalt, to the right of which are bands of black labradorite. This combination...

beginning in the late eighth or early ninth century. Cobalt glass, or Smalt, is a variation of cobalt blue. It is made of ground blue potassium glass...

added to rinse water for centuries, first in the form of powder blue or smalt, or using small lumps of indigo and starch, called stone blue. After the...

impure cobalt arsenate. During the Victorian Era, zaffre was used to prepare smalt and to stain glass blue. The first recorded use of zaffer as a color name...

achieved using cochineal. Yellow could come from saffron, and pale blue from smalt. The bluish tint of a ruff was supposed to make the wearer's complexion...

S. Beudant in 1832 because the mineral was used in the preparation of smalt for producing a blue color in porcelain and glass. Spencer 1911, p. 249...