What is cobalt blue

It is also an important traditional pigment in Chinese porcelain. Cobalt blue pigment consists either of cobalt II oxide-aluminum oxide or cobalt II aluminate. These pigments are slightly different in their chemical composition, but both are the product of finely ground cobalt oxide and aluminum oxide, or alumina, being joined by a process known as "sintering.

Cobalt blue is the main pigment used in distinctive Chinese blue and white porcelain , known as qing-hua or "blue flower" porcelain. The earliest known examples of this type of pigment date from the seventh century in China, although examples of cobalt-based blue pigments are known from ancient Greece, Egypt and the middle east. Brief description of Cobalt blue: It's a cobalt oxide-aluminum oxide. Example of use by artists: A painting witnesses Renoir's shifts from cobalt blue to the new and more cheap artificial ultramarine Renoir, Pierre-Auguste c.

The Umbrellas Les Parapluies This painting was painted during the restless period in Renoir's work. Sections: purples blues greens yellows oranges reds whites browns blacks.

German French Italian Kobaltblau. A painting witnesses Renoir's shifts from cobalt blue to the new and more cheap artificial ultramarine Renoir, Pierre-Auguste c. Learn More. Renewable energy plus storage is about to be cheaper than coal.

David Vieau. Battery storage makes renewable energy inexhaustible. Larry Flowers. With a moderate tinting strength, it is useful on the palette for muted colour mixes. Cobalt blue deep, a unique, red shade cobalt blue is made by using cobalt zinc silicate. Until the 19th century the best blue pigment available to artists was ultramarine. Laboriously ground from lapis lazuli, a semi-precious stone mined only in distant Afghanistan, the prohibitive cost of this pigment prompted the Napoleonic administration to find an alternative.

With a purer tint than Prussian blue, it was immediately taken up by artists. In fact, cobalt blue sometimes is called Parrish blue, after the artist Maxfield Parrish, who made famously intense blue skyscapes using this colour. Smalt is a bright variation on cobalt blue, made from the ground pigment of cobalt glass used in classical stained glass and pottery where a cobalt compound would be included in a glass melt.

In we were thrilled to relaunch this special blue colour as a permanent part of our range.