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Nicosia Green Earth 2 fl oz

SKU: NAP-221-312
The minimum order amount for this product line is $30.00
Nicosia Green Earth 2 fl oz
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 1   US$ 19.84 
 2   US$ 19.72 
 3   US$ 19.65 
 4-5   US$ 19.60 
 6-7   US$ 19.53 
 8-11   US$ 19.48 
 12+   US$ 19.41 
Price: US$ 19.84
US$ 19.84

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Product description

Nicosia green earth is the natural mineral glauconite, a greenish mineral of hydrated iron potassium silicate containing small amounts of aluminum, calcium, magnesium, sodium, and numerous trace elements. It is a bright green mineral that looks like tiny flakes of the mineral mica, or small lumps of clay. The color of glauconite varies considerably from pale green, bright green, bluish-green, olive-green, and black-green, depending upon its constituent elements. Our Nicosia green earth is from deposits in southeastern Cyprus near the region of its capital city.

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, watercolors 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.

Pigment Names
Common Names: English: green earth
French: terre verte
German: Grünerde
Italian: terre verde
Spanish: terra verde
Mineral Names: English: glauconite
French: glauconite
German: Glauconit, Glaukonit
Italian: glauconita
Spanish: glauconita

Origin and History
The word glauconite is derived from the Greek word glaucos, originally meaning gleaming, later bluish green, and then silvery or gray. It has been in painting since ancient times. Restorers have proved through X-ray diffraction that the famous pigments of past centuries known as Veronese and Bohemian terre verte are in essence glauconite.

Green earth, also widely known as terre verte, is primarily composed of the minerals celadonite and glauconite. The presence of celadonite or glauconite, minerals of complex silicate composition, produces colors that vary from cold bluish greens to warmer yellow and olive hues. It may have been formed originally from biotite (a dark-colored mica), but other minerals, and even organic matter, may change it into glauconite. The mineral has a micaceous structure, that is, a silicate crystallized in monoclinic forms that readily separates into very thin leaves. It is characteristically formed on submarine elevations of ancient seabeds ranging in depth from 30 to 1,000 meters (100 to 3,300 feet) below sea level, and in the sedimentary rocks of different geological systems. Usually it forms small (from 0.8 to 1.5 mm in diameter) green round or angular grains.

The most famous deposit of green earth was found near Verona, Italy, and this mine was active until World War II. Other mines produced variations in color and texture of the pigment: Baltic states, Bohemia, Cypress, France, Hungary, Poland, Saxony, Tyrol, and the Mendip hills of England. Our green earth is from Cyprus where well known deposits of glauconite are found today.

Preparation and Alteration
Glauconite is not found in nature as large accumulations, but rather in combination with clay or sand. Its content rarely exceeds 50% of the deposit, making it necessary to process the mineral for use as a pigment. The preparation of glauconite is usually done with levigation, sifting and sometimes electromagnetic separation. Sometimes clay or sandy minerals, tinted with aniline red or copper pigments, have been marketed under the guise of glauconite. Ethyl alcohol can be used to detect the presence of aniline red, while mixing a sample with ammonium hydroxide can reveal the presence of copper-based colors.

Permanence and Compatibility
Earth pigments, and green earths in particular, are often described as the most permanent of colors. Earths are not affected by sunlight or by atmospheric conditions. They do not react with solvents, but according to Feller, green earth is partially soluble in acids and alkalis.

The pigment is considered non-toxic, but care should always be exercised when handling the dry powder pigment so as not to inhale the dust.

Aqueous Pigment Dispersion: Nicosia Green Earth (Glauconite)

Pigment Information
Color: Green
Colour Index: Pigment Green 23 (77009)
Chemical Name: Hydrated Iron Potassium Silicate
Chemical Formula: (K,Na)(Fe3,Al,Mg)2(Si,Al)4O10(OH)2
ASTM Lightfastness Rating
Acrylic: I
Oil: I
Watercolor: Not Rated
Density: 2.2–2.9
Hardness: 2.0–3.0
Refractive Index: 1.551–1.569


Color: Green
Color Index: Pigment Green 23 (77009)
Chemical Name: Hydrated Iron Potassium Silicate
Acrylic: I
Oil: I
Watercolor: Not rated
Density: 2.2–2.9
Hardness: 2.0–3.0
Refractive Index: 1.551–1.569

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: 0.13 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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Nicosia Green Earth 2 fl oz

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