Rublev Colours Orange Ochre is an opaque orange yellow with good tinting strength, fine grained and brushes “long” in the direction of the brush stroke. Our orange ochre is a single pigment color made of natural iron oxide hydroxide mineral from the last remaining European company operating the ochre deposits in the French quarries of Gargas and Rustrel nestled in a 12 mile long enclave in the heart of the Luberon Massif, the ochre country.
Iron oxide hydroxide is the principle coloring agent in ochre. This color is based on the natural mineral goethite associated with varying proportions of others mineral such as clay, chalk and silica. They differ from other ochres in that they contain water. In other words, the iron to which they owe their color is iron hydroxide.