High-quality natural red earth from Napoli – Italy, gives a unique warm orange-red hue. The pigment is prepared by careful selection, grinding, washing, and levigation in controlled environmental conditions by an innovative approach.
• Alternative names: Natural red earth, natural red ochre, hematite.
• Color index: Pigment Red 101
• History of use: Since prehistoric times
• Non-toxic
• Lightfastness (UV resistance): 8 (excellent)
• Suitability: Acrylics, Fresco, Oil, Tempera, Watercolor
• Origin: Napoli, Italy
• Custom quantity is available upon request, please contact us for more information.
• Shipped within 1 to 3 weeks of the purchase date. Rush delivery may be available at an additional charge. Please contact us for more information. The color dust is shipped in a secure package.
• Free shipping in Greece
References/Βιβλιογραφία:
(1) Catherine M. Schmidt, Karen A. Trentelman, 1064 nm Dispersive Raman Micro-Spectroscopy For the In-situ Identification of Organic Red Colorants, e-Preservation Science, e-PS, 2009, 6, 10-21.
(2) Christina Bisulca, Marcello Picollo, Mauro Bacci, Diane Kunzelman, UV-VIS-NIR Reflectance Spectroscopy of Red Lakes In Paintings, 9th International Conference on NDT of Art, Jerusalem Israel, 25-30 May 2008. Available as pdf.
(3) Cornell, R. M., & Schwertmann, U. The Iron Oxides: Structure, Properties, Reactions, Occurrences and Uses. Wiley 2006.
(4) Helwig, K. Iron Oxide Pigments, in Artists’ Pigments, Berrie, B.H., Ed., National Gallery of Art Washington, 2007, pp 38 – 109.
(5) Hradila, David; Grygara, Tomáš; Hradilová, Janka; Bezdička, Petr. Clay and iron oxide pigments in the history of painting. Applied Clay Science 22, 2003, p. 230
(6) Kirby J. and White R. , The Identification of Red Lake Pigment Dyestuffs and a Discussion of their Use, National Gallery Technical Bulletin, Vol. 17, (1996), pp. 56-80.
(7) Kühn H., Die Pigmente in den Gemälden der Schack-Galerie, in: Bayerische Staatsgemäldesammlungen (Ed.) Schack-Galerie (Gemäldekataloge Bd. II), München 1969.
(8) Stathopoulou K., Valianou L., Skaltsounis A.L., Karapanagiotis I., Magiatis P., Structure elucidation and chromatographic identification of anthraquinone components of cochineal (Dactylopius coccus) detected in historical objects, Anal Chim Acta. 2013 Dec 4;804:264-72. doi: 10.1016/j.aca.2013.09.053. Epub 2013 Oct 5.
(9) Whitney, A. V., et al. An innovative surface-enhanced Raman spectroscopy (SERS) method for the identification of six historical red lakes and dyestuffs. Journal of Raman Spectroscopy 37(10), 2006, 993–1002.
