Rublev Colours Cassel Earth is an semi-opaque brown with good tinting strength, medium grained and, like most Rublev Oil Colours, brushes "long" in the direction of the brush stroke. Our Cassel Earth is imported from umber deposits in Germany.
Historically, Cassel earth was based on lignitic earth or earth containing as much as 60% brownish-black coal (an intermediate between peat and bituminous coal). Rublev Cassel Earth is made from milled and purified umber. The particular umber chosen closely resembles the historical pigment in masstone, opacity and tinting strength. Historical Cassel earth was a fugitive pigment (that is subject to fading in light). Rublev Artists Oils Cassel Earth, on the other hand, is lightfast. Rublev Colours Artists' Oils: Cassel Earth
Note: Colors swatches are shown in mass tone, straight from the tube, on the left, and mixed with an equal amount of white on the right. All pictures of color swatches in this web site are only approximations of the actual color of the oil paint. We taken every care to match the color in these pictures on calibrated color monitors to the actual color. However, because of the wide variance in color monitors the results you get may vary.
|Color Names |
|Common Names: || English: Cassel brown |
French: brune de Cassel
German: Cassel braune
Italian: bruno uso Kassel
Russian: ����� ������ ����������
Spanish: tierra cafe de Cassel
|Color Information |
|Single Pigment: ||Natural Iron-Manganese Oxide |
|Binder: ||Linseed Oil |
|Pigment Information |
|Color: ||Dark Brown |
|Colour Index: ||Pigment Brown 7 |
|Chemical Name: ||Natural Iron-Manganese Oxide |
|Chemical Formula: ||Fe2O3 MnO2 |
|CAS Number: ||12713-03-0 |
|ASTM Lightfastness: ||I |
|Opacity: ||Semi-Opaque |
|Tinting Strength: ||Good |
|Drying rate: ||Average |
Note: Some separation of pigment and oil may occur in Rublev Colours Artists' Oils and is a natural process when no wax or stabilizers are added to paint to prevent this from occurring.