Cornelissen
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Powdered Rosin
Starting at: £13.90
Rosin is the powdered form of colophony, which is a by-product of the distillation of turpentine. Its primary application is to create tonal areas on metal plates as an aquatint resist. It is also an additive in etching grounds, where it gives a hard surface to the otherwise soft wax. Learn More -
Colophony
Starting at: £7.30
Colophony is a by-product of the distillation of turpentine. It is soluble in most solvents, but considered an adulterant in varnishes and paints, as it forms a weak surface that is prone to darkening and cracking. It is, however, a key ingredient in wax-based etching grounds, imparting hardness, and can be used in powdered form (rosin) to make aquatints. Learn More -
Gum Tragacanth
Starting at: £20.00
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Gum Tragacanth is a natural tree gum with pigment-binding properties. It can be used to make a very matte watercolour, but is most commonly used in the production of soft pastels.
Please see the Formulas & Recipes section on our homepage for a recipe to make your own pastels using Gum Tragacanth (currently under construction).
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Gum Sandarac
Starting at: £8.60
Gum Sandarac, derived from a coniferous tree, is available in powdered or lump form. It can be dissolved in alcohol to create a varnish that is suitable as an isolating layer in oil painting and as a traditional top coat for egg tempera. It forms a brittle layer, so is only suitable for use on a rigid support. Another application is as a surface preparation for calligraphy; the ground gum can be dusted across a piece of prepared vellum or paper to create a resist, which shrinks ink strokes slightly, making them appear finer, with crisp edges. Learn More -
Gum Mastic
Starting at: £20.30
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Gum Mastic is a tree resin, which dissolves into a clear varnish with alcohol or turpentine, but not with mineral spirits. Mastic varnishes are more prone to blooming and darkening with age than damar-based varnishes, and painting mediums that contain gum mastic can deteriorate in unpredictable ways. For this reason, it is primarily used in restoration, rather than in the production of artwork. Learn More -
Gum Damar
Starting at: £10.00
Damar is a pale, almost colourless tree resin, which is soluble in turpentine, but not in alcohol or mineral spirits. It can be used as a varnish or as a glossy painting medium in conjunction with vegetable oils, and is generally preferable to other resin-based varnishes, such as mastic varnish, as it retains its colourless appearance for a longer period of time. In encaustic painting, the inclusion of damar resin imparts toughness and gloss to the paint surface. Learn More -
Gum Copal Manila
Starting at: £6.00
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 -
Gum Benzoin
Starting at: £14.70
Gum Benzoin is used as a fixative, slowing the dispersion of essential oils and other materials into the air. Is occasionally called for in some old varnish recipes where it was employed primarily for its odour. Learn More -
Gum Arabic
Starting at: £4.25
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, while Nigerian Gum Arabic (while stocks last) is better suited to stone lithography and other printmaking techniques. 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 -
Rottenstone Grey
Starting at: £7.00
Fine abrasive powder used historically for polishing daguerreotype plates. Can be used to age wooden frames and object's d'art. Learn More -
Precipitate Chalk
Starting at: £6.30
Precipitate Chalk is fine and white. For use in aqueous mediums as a ground for oil and tempera paintings. Learn More -
Gesso di Bologna
Starting at: £12.00
Gesso di Bologna is a bright white Calcium Sulphate, or gypsum, from Italy, which can be used as a substitute for whiting in the preparation of gesso. It is ground to a particularly fine powder, which makes it a suitable ground for gilding, as the small size of the particles allows for greater compression when burnishing. Learn More -
Crocus Powder
Starting at: £8.50
A red amorphous powder consisting of ferric chloride oxide. Used as a colourant for ceramic glazes. Also used in polishing glass, metal, or gems. Also known as jeweller's rouge. Learn More -
Carborundum Powder
Starting at: £11.50
Carborundum Powder. Grid of coarseness: Fine 120/220, Medium 80/120, Coarse 60/80 Learn More -
Asphaltum Powder
Starting at: £14.30
Call to Order
Used in etching grounds and stopping out varnishes. Can be used as a blackish brown colourant but when combined with oil causes wrinkling and cracking. Learn More -
Tallow
Starting at: £34.60
Used in printmaking. Imparts softness and greasiness. An ingredient for producing soft etching ground. Learn More -
Ferric Chloride
Starting at: £15.00
For the etching of plates for printing fine art images in intaglio. Ferric Chloride can be used as a non toxic alternative to nitric acid in the etching process. Suitable for etching most types of metals including copper, zinc, mild steel, aluminium, iron and brass. Learn More -
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Fullers Earth
Starting at: £6.30
Fullers Earth is used to remove plant debris and other impurities from cold-pressed linseed oil, as its large particle size and unusual shape attracts unwanted matter and pulls it down, away from the surface of the oil. Our Fullers earth consist sly of Bentonite.
Learn More -
Whiting
Starting at: £4.00
Whiting is powdered Calcium Carbonate, which can be mixed with rabbit skin glue to create a chalk-based ground for oil, tempera, distemper or encaustic painting. Traditionally, whiting was an important ingredient when preparing painting surfaces in the north of Europe, as opposed to gypsum (Calcium Sulphate), which was widely used south of the Alps. Learn More -
Pumice Powder
Starting at: £5.70
Volcanic rock in powdered form. Used to provide tooth to grounds. Learn More -
Marble Dust
Starting at: £4.70
Imparts textue when added to acrylic mediums and primers. Used in lime mortar. Meets paint pigment specificitions in its fine form. Mesh size: Course (Irregular granules), Medium (16) and Fine (100). Learn More -
Gypsum
Starting at: £5.70
Gypsum is powdered Calcium Sulphate, a traditional ingredient in gesso grounds used in southern Europe. One of the advantages of preparing your painting surface with gypsum is that it allows for a particularly even absorption of the paint film. It can also be added to acrylic primers to increase absorbency or add tooth to a surface. Learn More -
Plaster of Paris
Starting at: £5.50
For moulding when mixed with the same volume of water. Sets quickly and will not shrink. Learn More -
Alumina Hydrate Light
Starting at: £8.30
Alumina Hydrate is an inert pigment with highly absorbent properties, which can be ground into oil paint as an almost colourless extender. It is often used as an additive in commercial oil paints, particularly in conjunction with transparent or lake pigments, as it provides stability and a homogenous consistency without effecting colour or gloss, although it may effect the pigment strength. When combined with linseed oil, it produces an almost transparent painting medium for extending oil colours. Sometimes referred to as Lake Base. Learn More -
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Cornelissen Lithography Sponge, Compressed
£6.50Cornelissen Lithography Sponge, Compressed. Designed to keep the litho stone wet during printing. It can be used for preparing printmaking or watercolour paper. Learn More -
Classic Nib Holder Sagittarius
Starting at: £2.90
Classic nib penholder made from FSC-certified wood. Available in Natural, Mahogany or Black. Learn More
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