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Natural Pigments Blue Ridge Violet Hematite 1 kg - Color: Red

SKU: NAP-450-811K
The minimum order amount for this product line is $30.00
Natural Pigments Blue Ridge Violet Hematite 1 kg - Color: Red
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 1   US$ 27.75 
 2   US$ 27.58 
 3   US$ 27.49 
 4-5   US$ 27.42 
 6-7   US$ 27.32 
 8-11   US$ 27.25 
 12+   US$ 27.15 
 
Price: US$ 27.75
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Product description

Details
Rublev Colours Blue Ridge Violet Hematite, is a natural red iron oxide from the heart of the Blue Ridge Mountains of Virginia. It has a high iron content (over 98%) giving it a deep brown red with plate-like micaceous particle structure.

Natural red iron oxides 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.

Pigment Names
Common Names: English: red oxide
French: oxyde rouge
German: Oxid rot
Italian: rosso ossido
Portuguese: vermelho óxido
Spanish: rojo óxido

Origin and History
Natural red iron oxide is based on the mineral ore hematite. The word hematite comes from the Greek word hema, meaning blood and was given the name "bloodstone" in ancient Greece (Theofrastus, c. 325 B.C.), implying that the mineral is blood red in color. Hematite is an important ore of iron and its blood red color in the powdered form lends itself well as a pigment. Hematite is among the oldest pigments known to humankind and has been used by every major civilization.

Source
In nature hematite rarely occurs as crystals but usually as nodules or earthen masses. The color of the crystalline form varies from steel-gray to black, while crypto-crystalline hematite is dull red to bright red. This common mineral is found in deposits of the most diverse types. There are several varieties of hematite, two of which are suitable for use as pigments: oolitic hematite, which is a friable earth composed of small rounded grains of dark red color that are lustrous and greasy to the touch; and hematite rose, a fine-crystalline and crypto-crystalline form of hematite of red color, which are usually encountered in friable earthen masses or reniform aggregates of bladed crystals in a circular arrangement giving the appearance of a rose. Red iron oxides (hematite) are found around the world and have been used as pigments since prehistory.

Permanence and Compatibility
Pigments made from the mineral hematite are dependable in mixtures with all other permanent pigments, and are considered to be permanent with considerable tinting strength and opacity. They do not react with solvents, and are indifferent to alkalis, but are partially soluble in acids. Zinc white and hematite yield excellent flesh tints.

Oil Absorption and Grinding
Natural red iron oxide absorbs a moderate amount of oil. The oil absorption ratio is 15 parts by weight of raw linseed oil to 100 parts by weight of pigment. If the measurement were grams, red iron oxide would require 15 grams (by weight) of linseed oil to grind 100 grams (by weight) of pigment to form a stiff paste. It forms an average drying oil paint, and a hard, fairly flexible film.

Toxicity
Natural red iron oxide is not considered to be toxic, but care should be used in handling the dry powder pigment to avoid inhaling the dust.

Pigment: Rublev Micaceous Red Oxide
Pigment: Rublev Micaceous Red Oxide

Pigment Information
Color: Red
Colour Index: Pigment Red 102 (77491)
Chemical Name: Iron Oxide
Chemical Formula: Fe2O3
ASTM Lightfastness Rating
Acrylic: I
Oil: I
Watercolor: I
Properties
Specific Gravity: 5.0
Hardness: 5.0–6.0
Refractive Index: 2.78–3.01
Oil Absorption: 15 g / 100 g






Specifications:

Color: Red
Color Index: Pigment Red 102 (77491)
Chemical Name: Iron Oxide
Acrylic: I
Oil: I
Watercolor: I
Hardness: 5.0–6.0
Refractive Index: 2.78–3.01
Oil Absorption: 15 g / 100 g



Natural Pigments

Natural Pigments is a limited liability company based in Willits, California. We manufacture and distribute rare and hard-to-find materials for fine artists and decorators. We specialize in supplying artists' materials that were used in historical painting since pre-historic times up to and including the nineteenth century.

We constantly search for materials and products of the finest quality so that we can bring them direct to you from the source. To do so, we travel the world to find materials specifically for use by professional artists and decorators. We obtain minerals from mines in Afghanistan, Chile, Russia, Ukraine and Uzbekistan, to name a few places, processing these into natural pigments. We purchase resins, gums and plants from India, Kenya and Malaysia to make natural varnishes and painting mediums.

Our mission is to provide the largest variety of natural pigments, paints and other professional artists' supplies, enabling us to bring you a selection that makes shopping for rare and hard-to-find art materials easy. Our objective is to promote the education and use of these materials among artists by providing detailed information for their employment in encaustic, fresco, oil, watercolor and tempera painting.
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Product weight: 2.20 lbs
 

This product is shipped from our warehouse in Gretna, NE, USA.
This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
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Blue Ridge Violet Hematite 1 kg
Pigment: Rublev Micaceous Red Oxide




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