Abstract
This paper presents and discusses the first analyses made to date on the body, the glaze and the “ Ronda” under-glaze blue of a plate from the French Arras manufacture. The body is an association of quartz (relict) + cristobalite + ß-wollastonite + vitreous phase. Chemically, it is the richest in SiO 2 and Al 2 O 3 and with the lowest MgO content of all French soft porcelains. The glaze is silica-and lead-rich, with little aluminum, calcium, potassium and sodium. Its formula must have been close to that of Vincennes. The composition of the blue painting is compatible with a blue glass containing cobalt, nickel, arsenic, barium and bismuth, very different from the blue of a Sèvres plate from 1781.
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Schedule a callMore From: Sèvres. Revue de la Société des Amis du musée national de Céramique
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