mineral

Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)

BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel

Hardness: 7.5-8 (if real Beryl) or 5.5-6 (if glass). Color: Deep green, purple, magenta. Luster: Vitreous. Crystal structure: Hexagonal. Specific gravity: 2.63-2.90.

Hardness: 7
Color: Deep green, purple, magenta
Luster: Vitreous

Identified May 26, 2026More mineral →

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Physical properties

Hardness: 7.5-8 (if real Beryl) or 5.5-6 (if glass). Color: Deep green, purple, magenta. Luster: Vitreous. Crystal structure: Hexagonal. Specific gravity: 2.63-2.90.

Formation & geological history

Beryl forms in pegmatites and metamorphic environments where hydrothermal fluids interact with beryllium-rich rocks. Synthetic versions are lab-grown via hydrothermal or flux methods.

Uses & applications

Primarily used in fashion jewelry, beadwork, and personal adornment due to aesthetic appeal.

Geological facts

Emeralds have been prized since antiquity; the oldest were found in Egypt. However, many beads in fashion mixes are treated quartz, dyed agate, or glass.

Field identification & locations

Identify by looking for inclusions under a jeweler's loupe. Natural emeralds have 'jardins' (internal gardens), while imitations may have air bubbles or smooth concave wear patterns typical of glass.

Other mineral specimens

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Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Epidote

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Nephrite Jade

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Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Biotite Schist

Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]

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Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral