mineral

Tourmalinated Quartz / Tourmaline in Matrix

Silicate mineral group (Schorl / Quartz)

AI-generated identification · may be incorrect

Hardness of 7.0 to 7.5 on the Mohs scale, black to dark brown color, vitreous to sub-metallic luster, hexagonal crystal system, uneven fracture, specific gravity around 2.65 to 3.2.

Identified August 2, 2026More mineral →

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Physical properties

Hardness of 7.0 to 7.5 on the Mohs scale, black to dark brown color, vitreous to sub-metallic luster, hexagonal crystal system, uneven fracture, specific gravity around 2.65 to 3.2.

Formation & geological history

Formed in pegmatites and hydrothermal veins where boron-rich fluids interact with cooling magma and surrounding host rocks.

Uses & applications

Used in gemstone jewelry, metaphysical healing collections, decorative items, and scientific equipment due to its piezoelectric properties.

Geological facts

Tourmaline has one of the widest color ranges of any mineral group in the natural world, and black tourmaline (schorl) is especially prized for its purported shielding properties.

Field identification & locations

Easily identifiable by its striated prismatic crystal habit, dark color, and high hardness. Commonly sourced from Brazil, Madagascar, and the United States.