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Ultramarine is a deep blue color pigment which was originally made by grinding lapis lazuli into a powder. [2] Its lengthy grinding and washing process makes the natural pigment quite valuable—roughly ten times more expensive than the stone it comes from and as expensive as gold.
Ultramarine was historically the most prestigious and expensive of blue pigments. It was produced from lapis lazuli, a mineral whose major source was the mines of Sar-e-Sang in what is now northeastern Afghanistan. [1]
Ultramarine (PB29): a synthetic or naturally occurring sulfur containing silicate mineral - Na 8–10 Al 6 Si 6 O 24 S 2–4 (generalized formula) Persian blue: made by grinding up the mineral Lapis lazuli. The most important mineral component of lapis lazuli is lazurite (25% to 40%), a feldspathoid silicate mineral with the formula (Na,Ca) 8 ...
Ultramarine was the most prestigious blue of the Renaissance, being more expensive than gold. Wealthy art patrons commissioned works with the most expensive blues possible. In 1616 Richard Sackville commissioned a portrait of himself by Isaac Oliver with three different blues, including ultramarine pigment for his stockings. [75]
Ultramarine is a blue pigment in use since medieval times. It was originally derived from lapis lazuli, a bright blue mineral. Dark blue
Ultramarine was the most prestigious blue of the Renaissance, and patrons sometimes specified that it be used in paintings they commissioned. The contract for the Madone des Harpies by Andrea del Sarto (1514) required that the robe of the Virgin Mary be coloured with ultramarine costing "at least five good florins an ounce."
It combines ultramarine blue pigment with a very specific binder created with the help of a chemist. By law, no one can appropriate a colour. IKB, also called Klein Blue does not refer to a shade of blue but to this unique combination created by Yves Klein and often considered an artistic act in the sense of conceptual art.
After the invention of synthetic ultramarine and Prussian blue it was manufactured by many companies, including Mrs. Stewart's Bluing in the United States, and by Reckitt's Crown Blue in Hull and the Lancashire Ultramarine Company's Dolly Blue at Backbarrow (later purchased by Reckitt & Sons) in the United Kingdom. [1]