Rock Identifier
Green cut gemstone, likely synthetic emerald or glass imitation (Undetermined; natural emerald is beryl (Be₃Al₂Si₆O₁₈), while the vivid, very uniform appearance may indicate imitation material) — gemstone
gemstone

Green cut gemstone, likely synthetic emerald or glass imitation

Undetermined; natural emerald is beryl (Be₃Al₂Si₆O₁₈), while the vivid, very uniform appearance may indicate imitation material

AI-generated identification · may be incorrect

Transparent bright green with faceted surfaces; hardness, luster, and crystal structure cannot be established from the image. Natural emerald has Mohs hardness 7.5–8 and a hexagonal crystal structure; glass is much softer and lacks crystal structure.

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Physical properties

Transparent bright green with faceted surfaces; hardness, luster, and crystal structure cannot be established from the image. Natural emerald has Mohs hardness 7.5–8 and a hexagonal crystal structure; glass is much softer and lacks crystal structure.

Formation & geological history

If natural emerald, it formed in beryllium-bearing hydrothermal or metamorphic environments over geological time. A synthetic stone is lab-grown; an imitation may be colored glass.

Uses & applications

Cut gemstones are used in jewelry and collecting; glass imitations are decorative rather than valuable gem material.

Geological facts

Color alone cannot distinguish emerald from synthetic emerald or colored glass. Magnification and gemological testing can reveal inclusions, bubbles, and refractive properties.

Field identification & locations

The image shows a small, vivid-green faceted piece, but does not establish its identity. Common natural emerald sources include Colombia, Zambia, and Brazil; seek gemological testing before purchase or valuation.