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Natural Pigments Blue Verditer 10 g - Color: Blue

SKU : NAP-417-1101
The minimum order amount for this product line is $30.00
Natural Pigments Blue Verditer 10 g - Color: Blue
Discount table
Qty Price
 1   US$ 16.55 
 2   US$ 16.45 
 3   US$ 16.39 
 4-5   US$ 16.35 
 6-7   US$ 16.29 
 8-11   US$ 16.25 
 12+   US$ 16.19 
Price: US$ 16.55
US$ 16.55

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Product description

Blue verditer is the name given to artificial basic copper carbonate with approximately the same chemical composition as azurite. Refiner's dark blue verditer was used in watercolors and distemper during the 17th and 18th centuries. Our Refiner's dark blue verditer is made according to an English recipe of the 18th century.

Pigment Names
Synonyms: English: bice; blue ashes, cendres blue, Sanders blue; mountain blue, copper blue, lime blue
French: cendres bleu; bleu de montagne; bleu d'Allemagne
German: Verditer; Aschblau; Bergblau; Kalkblau
Italian: ceneri blu di pasta, azzurro della cenere; azzurro della magna
Portuguese: azul da cinza; azul da montanha
Spanish: azul de la ceniza; azul de la montaña
Latin: lapis armenius; azurium citramarinum

Origin and History
Blue verditer is the name given to artificial basic copper carbonate with approximately the same chemical composition as azurite. It is believed that blue verditer was a byproduct of silver refining. Numerous early recipes for its preparation are known; the best types appear to have been prepared at relatively low temperatures with a copper salt. "Refiner’s verditer" was considered the best type of copper carbonate and was widely used as house paint during the 17th and 18th centuries with continuing use up to the 19th century.

Our Refiner's dark blue verditer is made according to an English recipe of the 18th century that requires relatively low temperatures for its manufacture. This deep blue, slightly more greenish than natural azurite, lends itself well to consistent applications of color. Microscopically, blue verditer appears as tiny, rounded, fibrous aggregates, even in size and blue by transmitted light. It is similar in color to finely ground azurite.

Permanence and Compatibility
Blue verditer is stable in lime and is well suited for tempera and watercolor, but is liable to darken or become greenish in oil. However, it can be used with some success if it is mixed with lead white ground in oil. The white pigment lightens the blue and keeps it from appearing too dark. Painted swatches of our Refiner's dark blue verditer ground in oil show little change in color after five years.

Oil Absorption and Grinding
Verditer absorbs a medium amount of oil (23 g oil per 100 g of pigment).

Blue verditer contains copper, which can be toxic if inhaled or ingested. Care should be used in handling the dry powder pigment to avoid inhaling the dust.

Pigment: Refiner's Dark Blue Verditer

Pigment Information
Color: Blue
Colour Index: Pigment Blue 30 (77420)
Chemical Name: Basic Copper Carbonate
Chemical Formula: 2CuCO3.Cu(OH)2
ASTM Lightfastness Rating
Acrylic: Not Tested
Oil: Not Tested
Watercolor: Not Tested
Specific Gravity: 3.70
Hardness: 3.5–4.0
Refractive Index: α=1.73, β=1.758, γ=1.838
Oil Absorption: 23 g oil/100 g pigment

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: 0.02 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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Detailed images
Blue Verditer 10 g
Pigment: Refiner's Dark Blue Verditer
Blue Verditer 10 g

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