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Sapphire crystal measuring ±2.8 cm in diameter, with well-defined faces and edges. The growth veins on the face are clearly visible and well-positioned three-dimensionally in a Sillimanite and Biotite matrix, measuring ±8 x 5.2 cm.
Mounted on a 6 x 6 cm methacrylate base.
*Sapphire is a magnesium-aluminum silicate. It is an ancient mineral described around 1920, very common in some types of metamorphic rocks. Curiously, however, it is rarely found in automorphic crystals.
Vangaindrano, Fianorantsoa, Madagascar