gemstone

Tumbled pink tourmaline (probable)

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

AI-generated identification · may be incorrect

Small polished stone with pink coloration and dark inclusions; vitreous luster and no visible cleavage. Tourmaline hardness is 7–7.5 Mohs, specific gravity about 3.0–3.3, and it has a complex trigonal crystal structure; the image is insufficient for certainty, and pink quartz or rhodonite are alternatives.

Identified August 27, 2026More gemstone →

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Physical properties

Formation & geological history

Tourmaline crystallizes mainly in lithium-rich granitic pegmatites from hydrothermal fluids, commonly during the Precambrian to Phanerozoic. Polishing and rounding indicate human processing.

Uses & applications

Used as a collectible and jewelry gemstone; fine transparent pink tourmaline can be faceted, while opaque pieces are commonly cabochons or tumbled stones.

Geological facts

Tourmaline is strongly pleochroic and can become electrically charged when heated or rubbed (the pyroelectric effect). Color zoning is common in individual crystals.

Field identification & locations

Common sources include Brazil, Afghanistan, Madagascar, Mozambique, Nigeria, and California. Confirm with refractive index, hardness, specific gravity, and—ideally—Raman or gemological testing; visual identification is tentative.