
Product details
- Size
- 15 ml
- Blick SKU
- 01705-8070
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.
Raw Umber
- Pigment code
- PBr7
- Type
- earth
- Chemical name
- hydrated iron oxide
- Chemical formula
- α-FeO3+(OH) or Fe2O3 × MnO2
- Properties
- Raw Umber is a cool, transparent brown ranging from yellowish brown to greenish brown. It has surprisingly good tinting strength, a high level of opacity, mixes well with greens, and is quick drying in oil form. It has excellent color properties and can create a variety of subtle, clear tints when mixed with white. It grays when mixed with blue and white. Raw Umber can tend towards chalkiness in dark mixes in oil form.
- Permanence
- Raw Umber has excellent permanence.
- Toxicity
- Raw Umber itself is considered non-toxic. If contaminated by manganese compounds, it may be highly toxic if inhaled and moderately toxic if ingested.
- History
- This pigment gets its name from the Latin word umbra, meaning shadow or shade. Its full name is listed as terra di ombra, meaning earth of shadow/shade, due to its original extraction from the area of Umbria, Italy. It has been used as a pigment since prehistoric times. Currently, the finest umber comes from Cyprus.
- Description
- Chestnut Brown, Euchrome, Jacaranta Brown, Mars Brown, Raw Brown, Sicilian Brown. Cyprus Umber, Turkey Brown, and Turkey Umber are the best quality umbers.
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