mineral

Pink and Green Tourmaline (Tumbled)

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

AI-generated identification · may be incorrect

Hardness: 7-7.5 (Mohs scale), Color: Pink (Rubellite) and Green (Verdelite), Luster: Vitreous, Crystal structure: Trigonal, Cleavage: Indistinct, Specific Gravity: 3.06

Hardness: 7-7

Identified June 25, 2026More mineral →

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Physical properties

Hardness: 7-7.5 (Mohs scale), Color: Pink (Rubellite) and Green (Verdelite), Luster: Vitreous, Crystal structure: Trigonal, Cleavage: Indistinct, Specific Gravity: 3.06

Formation & geological history

Formed in igneous pegmatites and metamorphic rocks through hydrothermal processes involving boron-rich fluids. Often found in pockets within granitic veins.

Uses & applications

Used extensively in jewelry as gemstones, in collector stone sets, and historically in scientific instruments for its pyroelectric and piezoelectric properties.

Geological facts

Tourmaline can come in more colors than almost any other mineral. The name comes from the Sinhalese word 'turmali', meaning 'mixed'. It was often mistaken for rubies or emeralds in ancient times.

Field identification & locations

Identify by its characteristic triangular cross-section (if uncut), vitreous luster, and high hardness. Tumbled stones like these are common in metaphysical shops and jewelry. Major sources include Brazil, Madagascar, and Afghanistan.