gemstone

Emerald (rough crystal)

Beryl, Be₃Al₂Si₆O₁₈; green color typically from chromium and/or vanadium

AI-generated identification · may be incorrect

Mohs hardness 7.5–8; deep green, vitreous luster, hexagonal crystal system, and poor to indistinct cleavage. The pictured specimen is rough and fractured, so color alone cannot confirm gem quality or origin.

Identified October 7, 2026More gemstone →

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At a glance

Common name: Emerald (rough crystal)
Scientific name: Beryl, Be₃Al₂Si₆O₁₈; green color typically from chromium and/or vanadium
Category: gemstone
Identified: October 7, 2026
Method: Standard

AI Estimated Value

Small common rough pieces may sell for about $5–$100; well-formed, vivid, gem-quality crystals can be worth hundreds to thousands of dollars depending on size, clarity, and origin.

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

Forms in beryllium-rich hydrothermal veins and pegmatites, or in metamorphic rocks where fluids interact with chromium- or vanadium-bearing rocks. Emerald deposits range from ancient to geologically recent.

Uses & applications

Used as a faceted gemstone and in jewelry; attractive rough crystals are collected. Lower-grade material may be cut into beads or ornamental objects.

Geological facts

Emerald is the green variety of beryl; inclusions are common and are traditionally called the stone’s jardin (garden).

Field identification & locations

Look for green color, a glassy luster, and hexagonal prismatic crystal habit; emerald is found notably in Colombia, Zambia, Brazil, and elsewhere. Identification and treatment assessment require gemological testing.