mineral

Pink Tourmaline (Rubellite)

Rb:Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (Elbaite variety)

Hardness: 7-7.5 on Mohs scale; Color: Pink to deep reddish-pink; Luster: Vitreous (glassy); Crystal Structure: Trilateral (hexagonal); Cleavage: Indistinct; Specific Gravity: 3.0-3.3

Hardness: 7-7
Color: Pink to deep reddish-pink
Luster: Vitreous (glassy)

Identified March 14, 2026More mineral →

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Physical properties

Hardness: 7-7.5 on Mohs scale; Color: Pink to deep reddish-pink; Luster: Vitreous (glassy); Crystal Structure: Trilateral (hexagonal); Cleavage: Indistinct; Specific Gravity: 3.0-3.3

Formation & geological history

Formed in granitic pegmatites through hydrothermal activity. Mineral-rich fluids crystallize in cavities over millions of years, often associated with the late stages of igneous cooling.

Uses & applications

Primarily used as a gemstone in high-end jewelry (faceting or cabochon); also highly valued as mineral specimens for collectors due to its vibrant color and crystal habits.

Geological facts

Tourmaline is unique for its pyroelectric and piezoelectric properties, meaning it can generate an electrical charge when heated or compressed. The deep pink variety called Rubellite is one of the most sought-after colors.

Field identification & locations

Identify by its characteristic vertical striations along the crystal faces and its 'three-sided' rounded triangular cross-section. Commonly found in Brazil, Madagascar, Afghanistan, and the United States (Maine/California).

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