Rublev Colours Pigment Apt Red Oxide - 4 oz

Sourced from ocher deposits in the French quarries of Gargas and Rustrel nestled in a 12 mile long enclave in the heart of the Luberon Massif, the ocher country. Red iron oxide is the principle colouring agent in red ochers, such as Indian red, Terra Pozzuoli, Venetian red, etc. These pigments are basically composed of the mineral hematite with varying proportions of accessory mineral, such as clay, chalk and quartz. They differ from yellow ocher and brown ocher in that they do not contain water combined in their chemical structure. In other words, the iron to which they owe their colour is iron oxide not iron oxide hydroxide.

Natural red oxides, such as hematite, are opaque, absolutely permanent and have excellent covering power. They are strong absorbers of ultraviolet light. The best bluish shades are called Indian red; the yellowish shades, light red, English red and Venetian red. Formerly there was much confusion in the nomenclature of the red oxides; the terms given in this list are those specified in the ASTM standard D 4302.

WARNING: Exercise care when using dry pigments. Do not eat, drink or smoke. Avoid breathing dust. Use a NIOSH-certified dust respirator. Wash hands immediately after use. If the creation of dust is likely, wear protective clothing.