All color making is done by hand, and processes are controlled by artists. Pigments are ground in stone rather than metal rollers.
Color Swatch created using heavy application/diluted application and was applied on cold press watercolor paper (150 lb) material.
CoO • ZnO
Cobalt Green is a pure, fairly opaque, moderately bright bluish-green with a low tinting strength and limited hiding power. It makes valuable grays and muted, minimalistic greens when mixed with other pigments. However, it can brown at full strength and fade when mixed with lead based whites. It is quick drying in oil form and is not widely used because its hue can easily be matched by mixing green and blue pigments with superior painting properties. It is currently not in wide use.
Cobalt Green is completely lightfast. Its permanence is excellent, so it can be used in all painting techniques.
Cobalt Green is moderately toxic if inhaled or ingested. It is slightly toxic if it comes into contact with skin.
Cobalt comes from the Middle High German word kobolt, an underground goblin, because miners thought cobalt harmed silver ores. In 1780, the Swedish chemist Sven Rinmann developed a process for making a compound of cobalt and zinc (zinc oxide). It was introduced as a pigment in 1835, but poor tinting strength and high cost kept it in limited use throughout the next centuries. It gained some popularity among 19th century landscape painters.
Green Smalt, Rinmann’s Green, Swedish Green, Zinc Green. Gellert Green is a similar variety, though it is made using a slightly different process.
cobalt titanium oxide
Cobalt Titanium Oxide is a low intensity color with a weak tinting strength, similar to Cobalt Blue. It has an average to fast drying time.
Cobalt Green has excellent permanence and lightfastness.
Cobalt Green is considered toxic due to its cobalt component. Do not breathe its dust.
Since ancient times, smalt blue has been used to color glass and ceramics. Cobalt salts, which give smalt its characteristic blue color, were identified in the 18th century. Techniques for manufacturing various cobalt salts, offering a range of blues and greens, were developed in the 19th century.
Cobalt Teal, Cobalt Turquoise, Light Green Oxide
Cobalt chromium oxide
This pigment offers a deep but dull and opaque tone of Cobalt Green. It has moderate covering power, but low tinting strength. It is primarily for use on its own, or for mixing with other cobalt colors. It is an alternative to cobalt(II) zinc oxide, another form of Cobalt Green.
Cobalt pigments are absolutely lightfast.
Cobalt chromium oxide is slightly toxic, and is a possible carcinogen.
Cobalt chromium oxide is an alternative Cobalt Green to the better known cobalt zinc oxide. Both pigments were used by landscape artists before phthalocyanine-based pigments became widely available in the 20th century.
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