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Mount Vision Handmade Pastel - Thunderstorm Red 684

Soft Pastel

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  • Blick Art Materials
    $4.84 USDShop
    Recorded Oct 22, 2026, 3:44 AM UTC

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Product details
Blick SKU
21949-3684
About this product range

The "feel" of a pastel — or how a pastel releases to paper — depends on the individual pigments used and the base they’re mixed with. Karl Kelly, owner of Mount Vision Pastel Company, understands that. By combining his technical expertise and artistic background, Kelly has translated the vivid color and unique density of individual pigments into high-quality, affordable pastels for the artist who sees beyond the expected when it comes to color.

Each hand-rolled stick contains a unique combination of traditional and synthetic pigments, combined to bring out their inherent beauty, enrich their undertones and make each color sing, both individually and together. Combined in varying degrees with marble dust, chalk and clay to assure a consistently smooth and buttery feel, colors lay down with minimal resistance, allowing several layers to accrue without becoming too thick.

Each stick measures 2-1/2" Long x 1/2" Dia. (64 mm × 13 mm).

Pigment information

General reference notes about pigments can describe other media (such as oil). They do not verify this product’s exact formulation or behavior.

Slate Gray

Pigment code
PBk19
Type
inorganic
Chemical name
hydrated aluminum silicate
Properties
Slate Gray is a semi-opaque, neutral gray pigment produced from powdered slate.
Permanence
Slate Gray is absolutely lightfast.
Toxicity
Hydrated aluminum silicate is not considered toxic, however pigment from natural sources may contain impurities.
History
Mineral sources of Slate Gray have been used as a colorant since prehistoric times.
Description
Powdered Slate.

Titanium White

Pigment code
PW6
Type
inorganic
Chemical name
titanium dioxide
Chemical formula
TiO2
Properties
Titanium White is the most brilliant of the white pigments. It is considered an all purpose oil color useful in all techniques and the best all around white. Its masstone is neither warm nor cool, placing it somewhere between Lead White and Zinc White. It is less prone to cracking and yellowing than Lead White, but it still yellows easily. Titanium White dries slowly in oil form, more slowly than Lead White but more quickly than Zinc White. It is opaque in oil and acrylic forms and semi-opaque in watercolor form. This pigment has good chemical stability, and its tinting strength is superior to both Lead White and Zinc White.
Permanence
Titanium White has excellent permanence and lightfastness.
Toxicity
Titanium dioxide is highly stable and is regarded as non-toxic.
History
Titanium is the ninth most abundant element in the Earth's crust, however mineral deposits that are economical to mine are less common. Titanium dioxide was first discovered in 1821, although it could not be mass produced until 1919. Widespread use of the pigment began in the 1940s. Since that time, it has become the most commonly used white pigment. The name comes from the Latin word Titan, the name for the elder brother of Kronos and ancestor of the Titans, and from the Greek word tito, meaning day or sun.

Pyrrole Red

Pigment code
PR254
Type
organic, aminoketone
Chemical name
Bis-(p-chrolopheny)-1. 4-diketopyrrolo(3. 4-c)pyrrole
Properties
Pyrrole Red is opaque and has strong covering power. According to manufacturer Ciba, which uses the trade name Irgazin Red, it is a “clean, highly saturated mid shade red with high temperature resistance, excellent color strength, outstanding chemical, solvent and bleed resistance, and good weatherfastness.”
Permanence
Pyrrole Red is considered to have excellent lightfastness among organic pigments in its class. Tests in industrial applications have given it scores of 7-8 on the Blue Wool Scale.
Toxicity
According to the Australian government's Ministry on Health and Aging, "The notified chemical exhibited low oral and dermal toxicity in rats, did not exhibit toxic effects when administered orally to rats for 28 days, was not a skin irritant in rabbi
History
Pyrrole Red, used as an automotive paint and as a colorant in plastics, was developed as one of a range of pigments to replace lead based pigments. In art materials, it is often used as a synthetic and lightfast replacement for carmine, a laked pigment that was originally produced from the body of the cochineal insect. It is also used to replace the older naphthol reds, organic red pigments that are sometimes only marginally lightfast and weatherfast.
Description
Magnacryl Red, Versal Red, Microlith Red, Unisphere Red, Cromophtol Red, Irgazin Red.

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