
Product details
- Blick SKU
- 21918-8404
About this product range
Blockx Soft Pastels are handmade in Belgium using pure pigments in the same tradition started by company founder and chemist Jacques Blockx in 1844. Four subsequent generations of Blockx family members have combined traditional methods with modern chemistry to create artist's colors that are pure, permanent, lightfast, and stable.
Colors are named in such a way as to make it easy for artists to choose the exact shades they need. For example, Apple Green's five shades are: Apple Green 641, Apple Green 642, Apple Green 643, Apple Green 644, and Apple Green 645.
If the color name ends in:
- 1 — the pure color is upgraded with black
- 2 — this is the pure color
- 3 — the pure color is tinted with white
- 4 — the pure color is tinted with more white
- 5 — the pure color is tinted with much more white
These watersoluble pastels are soft and velvety in texture, possess a superb tinting strength, and will draw on any surface, although they're best-suited for pastel paper.
Individually wrapped pastel sticks are 2-1/2" L x 1/2" Dia (65 mm x 12 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.
Raw Sienna
- Pigment code
- PBr7
- Type
- earth
- Chemical name
- hydrated iron oxide
- Chemical formula
- α-FeO3+(OH) or Fe2O3
- Properties
- Raw Sienna is a moderately dull deep earth yellow with medium tinting strength and excellent transparency. It is one of the basic permanent artists' pigments and is made from a form of limonite clay whose yellow-brown color results from ferric oxides. Raw Sienna is preferable to Yellow Ochre for creating flesh tones, due to its higher subtlety of color when mixed with white. It creates a bright Ochre when mixed with Cadmium Yellow and creates greens and grays when mixed with Ultramarine. Raw Sienna dries quickly.
- Permanence
- Raw Sienna has good permanence.
- Toxicity
- Raw Sienna has no significant hazards.
- History
- Raw Sienna has been used as a pigment since prehistoric times, although its current name came about during the Renaissance. It comes from the city of Siena, in Italy, and is short for terra di Siena, meaning earth of Siena. Sienna was famous for the mining and production of earth pigments from the Renaissance until World War II. Due to the depletion of clay deposits in Tuscany, Italian siennas now come from other areas, including Sicily and Sardinia.
- Description
- Italian Earth, Natural Brown Iron Oxide, Sienna.
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