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M. GrahamPaints

M. Graham Artists' Watercolor - Cobalt Teal, 15 ml Tube

Artists' Watercolor

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  • Blick Art Materials
    $22.38 USDShop
    Recorded Oct 21, 2026, 1:44 PM UTC

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Product details
Size
15 ml
Blick SKU
01705-5080
About this product range
  • Professional quality
  • Pure pigments, gum arabic, and honey
  • No artificial humectants or preservatives
  • Strong, true colors
  • Made in the USA

M. Graham Artists’ Watercolor Tubes are made with thoughtfully selected pigments and Northwest blackberry honey, a nod to early artists who sourced their materials from nature. Custom-milled to preserve the unique qualities of each pigment, the honey’s viscosity enhances color strength and ensures easy dilution, yielding fluid, uniform washes. It also prevents colors from hardening on the palette and in the tube.

Pigment information

General reference notes about pigments can describe other media (such as oil). They do not verify this product’s exact formulation or behavior.

Cobalt Blue

Pigment code
PB28
Type
inorganic
Chemical name
cobalt(II) oxide + aluminum oxide
Chemical formula
CoO + Al2O3
Properties
Cobalt blue is a semitransparent pigment with low to moderate tinting strength. When it dries, it appears lighter and less saturated. Pigment particles are large and grainy. Differences in how the pigment is ground and mixed lead to considerable differences in its performance among various manufacturers.
Permanence
Cobalt blue is absolutely lightfast and extraordinarily stable. The stability of cobalt salts at high temperatures make them the standard for blues used in ceramics and glassware.
Toxicity
Cobalt salts are toxic. Avoid respiratory and skin contact. Soluble cobalt may cause irritation and allergic reaction through contact with skin. It is considered a possible carcinogen.
History
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 Cobalt Blue, a chemically pure salt of cobalt and aluminum oxide, were developed in 1802.
Description
Smalt Blue

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