gemstone
Tourmaline
Elbaite / Schorl (Complex Borosilicate)
AI-generated identification · may be incorrectHardness of 7 to 7.5 on the Mohs scale, vitreous luster, and variable colors ranging from deep red-pink to dark green. It features a trigonal crystal system with distinct striated prismatic crystals.
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Physical properties
Hardness of 7 to 7.5 on the Mohs scale, vitreous luster, and variable colors ranging from deep red-pink to dark green. It features a trigonal crystal system with distinct striated prismatic crystals.
Formation & geological history
Formed in pegmatites and hydrothermal veins through high-temperature crystallization of mineral-rich fluids. Found globally in metamorphic and igneous rocks.
Uses & applications
Extensively used in high-end jewelry, metaphysical collections, and industrial applications due to its piezoelectric and pyroelectric properties.
Geological facts
Tourmaline exhibits strong pleochroism, meaning its color changes when viewed from different angles. Watermelon tourmaline displays distinct pink centers surrounded by green outer rings.
Field identification & locations
Identified by its characteristic vertical striations and conchoidal fracture. Common global localities include Brazil, Madagascar, Afghanistan, and the United States.
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