Antique French Gemstone Mineralogy Study Lithograph - Cordierite
Cordierite, also called dichroite or iolite, blue silicate mineral that occurs as crystals or grains in igneous rocks. It typically occurs in thermally altered clay-rich sediments surrounding igneous intrusions and often confused for sapphire.
Listed is an antique French mineralogy lithograph. Printed on thick antique paper with no yellowing or foxing. Framed in ebonized wood with two sided glass to view the scientific description on the backside. The published by Erich Cramer, a German publicist who published many scientific books in the 1940's and 1950's. Pages taken from the French Society of the Book S.A., 57, Road of the Street of the University, Paris 7th.
The "mat" is the non-glare glass space between the frame and lithograph. Please see last two photos for "visual explanation" of this framing concept.
Art size is approximately 10.5 x 7.5 inches.
Various gemstone prints available in other listings while supplies last.