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PB28

Cobalt Blue is an artificial mineral pigment, produced by the calcination of cobalt oxide and aluminium oxide. It has been widely used since the early 1800s, following its discovery by the French chemist Thenard at the beginning of the century. The name Cobalt has its roots in the German word Kobold, meaning imp or evil spirit. German miners specifically used this name in the late-Middle Ages, as the presence of Cobalt ore in the mines made the extraction of silver very difficult. They were possibly aware of the toxic properties of the mineral frustrating their efforts.

Cobalt remains a very popular colour today, and is present in most ranges of paints, being a semi-transparent pigment that is stable in all media. As a watercolour, all cobalt pigments tend to granulate. As an oil paint, it requires less oil content than most other pigments, and dries quite quickly. Like Cerulean Blue, some artists may choose to bind it with poppy oil, to avoid any possible colour changes brought about by the yellowish cast of linseed oil and the pigment's weak tinting strength.

Limeproof

Toxicity: C

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PB15:3

Phthalo (Mona) Blue is a synthetic organic pigment, Copper Phthalocyanine, that has been in use since the 1930s. It has an extremely high tinting strength and is a staining colour, so cannot successfully be lifted in watercolour. It requires a wetting agent to fully disperse into a medium, and, when used at full strength, a copper sheen is visible in dried paint film. It is transparent, very lightfast, and has a medium-to-slow drying rate in oil.

Toxicity: C

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Gamboge is a natural tree resin, generally extracted by tapping of Garcinia trees, available as a powder and in the solid "pipe" form. One of the unique features of Pipe Gamboge is that it does not require a binding agent to be used as a paint. Instead, colour can be lifted with a wet brush, as from a watercolour pan. When used as a water colour, it gives a bright transparent golden yellow colour. It is highly transparent, fugitive to light, with a weak tinting strength. The powder can be dissolved in alcohol to colour resin-based varnishes. Gamboge was used from ancient times to dye the clothes and also to make a transparent yellow varnish for the colouring of wood, metals and leather.

Pipe Gamboge is available while stocks last. Larger quantities are available by request.

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PB27

Prussian Blue is a synthetic organic pigment that was discovered by the paint maker Diesbach, apparently by accident, in Germany in the early eighteenth century. For many years, it was used not only as a colour in its own right, but also as a component of the original Hooker's Green. The other ingredient, gamboge, is highly fugitive, which is why many watercolours painted with Hooker's green have taken on a bluish tone with with age.  

It is a very transparent and heavily staining colour. It dries quite quickly in oil, and can therefore wrinkly if applied too quickly. It is suitable for use in oils, watercolour, and egg tempera. However, it shouldn't be used in conjunction with alkali substances, such as Lead White or Calcium Carbonate as it can turn brown, so it isn't suitable for fresco. For the same reason, it isn't used with acrylic resin binders due to their alkaline nature, so most paint manufacturers will replace Prussian Blue with a mixture of Phthalo Blue and black in their acrylic ranges. It requires a wetting agent to fully disperse into a binder.

Toxicity: B

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Prepared exclusively for Cornelissen following a Medieval English recipe, This handmade ink is produced in Cambridgeshire, from soot harvested from a working 19th-century forge, powered by charcoal and wood. Small batches of ink are blended to give the required consistency and strength. Forge Lamp Black is a thick, smooth non-waterproof ink that has good permanence. It can be watered down, and should always be shaken well before use. As with all handmade products derived from natural ingredients, there may be slight variations in the colour and consistency. Ingredients: Soot, gum Arabic, and clove oil.

Not suitable for fountain pens. Learn More

Made from organic walnut husks collected in Cambridgeshire, this deep brown walnut ink is made to an 18th-century formula. Small batches of the ink are blended to give the required consistency and strength. It has good permanence, but will eventually fade if left in direct sunlight for sustained periods of time, and is not wholly waterproof, but has some staying power, especially on sized watercolour papers. As with all handmade products derived from natural ingredients, there may be slight variations in the colour and consistency as a result of seasonal changes.

Not Suitable for fountain pens. Learn More

English Red Light Pigment Learn More

STABILO CarbOthello is a chalk pastel coloured pencil range available in up to 60 colours. With its wonderfully dry and dusty stroke it is just like a chalk pastel in pencil format. It's very popular with artists, art students and people with creative hobbies. Its high pigmentation guarantees great luminosity and opacity as well as colour fastness and colour brilliance especially on dark backgrounds and delicate papers. What's more it can be sharpened to a very fine tip which make it ideal for detail. Colours can be dry mixed and blended which makes colouring more fun and special.

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For removing pencil, charcoal and pastel or paper cleaning. Learn More

Increases adhesion of light collage materials - textiles, paper, pigments, sand etc. Can be used with AQUA Fix to become waterproof. Learn More

Inspired by traditional tailor’s chalk block, prepared for drawing and painting. Water soluble and extremely soft. Learn More

Fine golden synthetic fibre. More springy than da Vinci Cosmotop Spin (but with lower water absorption) making it an excellent brush for watercolour, gouache, acrylic and oil painting. Learn More

Drawing gum for masking specific areas which should remain white on water-colour paper, smooth drawing carton, photographs or films. For direct application with the dispensing bottle. Contains: synthetic resin dispersion without ammonia. Learn More

Inspired by traditional tailor’s chalk block, prepared for drawing and painting. Water soluble and extremely soft, choice of 6 traditional earth colours: sanguine, sepia, dark brown, brown, ochre and carbon black. Learn More

Short haired pure sable brush fo extra control and strength while spotting and retouching. Learn More

Fine golden synthetic fibre. More springy than da Vinci Cosmotop Spin (but with lower water absorption) making it an excellent brush for watercolour, gouache, acrylic and oil painting. Learn More

Drawing gum for masking specific areas which should remain white on water-colour paper, smooth drawing carton, photographs or films. Apply with writing pen, cotton bud or wooden stick. Contains: synthetic resin dispersion without ammonia. Learn More

Finest quality gouache paints, available in 48 shades, all of which are fully inter-mixable with the HORADAM® WATERCOLOUR range. Made following a traditional gum arabic recipe, they are naturally opaque, without the addition of white. They provide a luminous, velvet-matte finish, drying to a slightly lighter shade than when wet. 

Schmincke recommends the following:

"The application possibilities of HORADAM® GOUACHE are extremely versatile. Although it can be heavily diluted, gouache is mainly intended to provide opaque application of colour. Opaque, in this case, means that it is not impasto, because impasto application tends to produce cracking, unless the percentage of binder is increased by adding gum arabic (50302). While watercolour painting work goes from light to dark (the white paper is the light), in gouache painting, any process can be used. While “back painting” of lights is limited in watercolour painting, when working in gouache (and other opaque colours), light values and lights can be added later using colours."

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Handmade from 100% long fibred cotton rag. Acid free. Deckle edge. Tub sized (surface sized) with gelatine. Learn More

Gum Arabic is a resoluble binding agent, commonly used in the preparation of watercolours, but also useful as an adhesive, a size, and in the production of soft pastels. It is a natural product, harvested from the Acacia tree between October and May. The highest grade of Gum Arabic comes from the Kordofan region of Sudan. It is exceptionally pale and pure and therefore particularly suited to watercolour painting. Please see the Formulas & Recipes section on our homepage for a recipe to make your own watercolour paints using Gum Arabic (currently under construction). Learn More

Gum Copal Manila is derived from the resin of a coniferous tree native to the Philippines. It is not to be confused with other copals, which are the product of fossilised plant materials. It can be dissolved in alcohol to make a spirit varnish, to be used as a substitute for shellac, or as a fixative for pastel and charcoal drawings. Please note, that when used as a fixative it may darken the colour of the image. Learn More

Hake brushes are primarily used in watercolour painting for creating broad washes and applying glazes due to their excellent water-holding capacity and soft bristles. Learn More

Mix with Roberson Standard Bronze Powders to create metallic paint. 25g powder will make 125ml of paint. Learn More

120 lightfast colours with high covering power. Soft and water-soluble, they combine the advantages and applications of classical watercolour paints and coloured pencils. Learn More

Beautifully soft and creamy oil pastels in a range of 120 colours. Blend of pure pigment, oil and acid free wax. 10% discount for 10+ pastels. 20% discount for 20+ pastels. Learn More

Fabriano 5 paper is mould made and 50% cotton. Available in hot pressed and cold pressed surfaces. Surface sized and acid free. Learn More

This brush has an excellen point and spring well suited to detail work in acrylic, watercolour and oils Learn More

Made by hand with the highest quality Tobolsky Kolinsky sable, this comes to a very fine point retaining excellent spring characteristics. This is an outstanding series of brushes. Learn More

Composed of different lengths of straight and wavy synthetic fibres, with extra fine tips. Precise point, high elasticity and colour absorption with a silver metal ferrule Handle made of water-resistant, hi-tech multicolour laminated wood. Ideal for watercolour painting. Very similar to Kolinsky Red Sable hair brushes. Learn More