Rublev Colours Dispersion Luberon Red Oxide - 2 fl oz

Rublev Colours Natural Red Oxide (Indian red) aqueous dispersion is from hematite deposits in Madras, India, and processed at the French ocher company operating in 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 principal colouring agent in red ochers, such as Indian red, Terra Pozzuoli, Venetian red, etc. These pigments are composed of the mineral hematite with varying proportions of accessory minerals, 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 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 about the nomenclature of red oxides; the terms given in this list are those specified in ASTM standard D 4302.

Rublev Colours Aqueous Dispersions are pigments dispersed in water ready to be mixed with water-based mediums. These dispersions are especially made for use with traditional painting mediums, such as egg tempera, casein tempera, fresco, watercolours and distemper (glue tempera). They are also ideally suited for use with gesso to make toned grounds for drawing and painting. Pigment dispersions from Rublev Colours contain only naturally-derived ingredients, in addition to pigment and water, making them ideally suited for traditional mediums. Unlike other pigment dispersions that are typically made for acrylic medium, Rublev Colours Aqueous Dispersions do not contain coalescent solvents, artificial dispersing resins and other additives that interfere with natural mediums. Aqueous Dispersions make preparing traditional mediums easy; you do not have to hassle with powders, grinding pigments in medium and calculating binder ratios to make water-based paint. They make adding the right amount of paint binder, such as egg yolk, a no brainer because the right amount of water is already contained in the dispersion, simply add egg yolk