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1.  Overview     2. History of use     3. Making the pigment     4. Technical details

About the chemical structure:          Chemical name: potassium glass containing cobalt Crystal system: glass Refractive index: 1.46 - 1.55

A swatch of Smalt paint:

How can you identify Smalt?          Chemical identification: n/a Spectra: Raman spectra (at University College London), (pdf file download; at University of Florence, Italy)   Usage and handling:          Permanence: excellent n/a   Literature:             Binger, H., Das Blaupigment Smalte, Restauro, 1, 1996, p. 36-39 Artists’ Pigments. A Handbook of Their History and Characteristics, Vol. 2: A. Roy (Ed.) Oxford University Press 1993, p. 113-130 Smalte (at Pigmentlexikon by Th. Seilnacht)

Other blues         (intro) - Azurite - Cerulean Blue - cobalt blue - Egyptian blue - Indigo       Prussian blue - smalt - Ultramarine