gemstone

Faceted green tourmaline (likely), damaged or included

Elbaite, Na(Li₁.₅Al₁.₅)Al₆(Si₆O₁₈)(BO₃)₃(OH)₄; visual identification is uncertain

AI-generated identification · may be incorrect

Pale olive-green, transparent to translucent, vitreous luster; tourmaline has a trigonal crystal structure and Mohs hardness of 7–7.5. The pictured square-cut stone shows prominent fractures or inclusions; specific gravity is typically about 3.0–3.3.

Identified October 11, 2026More gemstone →

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At a glance

Common name: Faceted green tourmaline (likely), damaged or included
Scientific name: Elbaite, Na(Li₁.₅Al₁.₅)Al₆(Si₆O₁₈)(BO₃)₃(OH)₄; visual identification is uncertain
Category: gemstone
Identified: October 11, 2026
Method: Standard

AI Estimated Value

About $1–$30 for a small, fractured or included stone; clarity, weight, and confirmed identity can substantially change value.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Tourmaline commonly crystallizes in lithium-rich granitic pegmatites and related hydrothermal veins, often during late stages of granite formation; many deposits are Mesozoic or younger, though ages vary by locality.

Uses & applications

Tourmaline is used as a gemstone and mineral specimen; this visibly fractured small cut stone may have limited jewelry value.

Geological facts

Green tourmaline is called verdelite; color alone cannot distinguish it from other green gemstones or glass.

Field identification & locations

Tourmaline often has lengthwise striations and can be strongly pleochroic, but faceting obscures those clues. Confirm identity with refractive-index or gemological testing; common sources include Brazil, Afghanistan, Mozambique, and the United States.