gemstone

Faceted color-change gemstone, likely synthetic alexandrite or glass imitation

Alexandrite: chrysoberyl, BeAl₂O₄; exact identification requires gemological testing

AI-generated identification · may be incorrect

Small oval cabochon/faceted stone with purple-blue and vivid green color zoning or color change, transparent to translucent, vitreous luster. Chrysoberyl hardness is 8.5 Mohs, orthorhombic, with poor cleavage; the photograph alone cannot establish hardness, density, or natural origin.

Identified August 15, 2026More gemstone →

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At a glance

Common name: Faceted color-change gemstone, likely synthetic alexandrite or glass imitation
Scientific name: Alexandrite: chrysoberyl, BeAl₂O₄; exact identification requires gemological testing
Category: gemstone
Identified: August 15, 2026
Method: Standard

AI Estimated Value

Approximately $1-$20 if glass or common synthetic; $20-$300 for a small synthetic alexandrite; natural alexandrite ranges from hundreds to many thousands of dollars depending on verified color change, clarity, and provenance.

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

Natural alexandrite forms in rare chromium-bearing metamorphic or pegmatitic environments, mainly in Russia, Sri Lanka, Brazil, and East Africa. Synthetic alexandrite and inexpensive simulants are common; geological age is not determinable from the image.

Uses & applications

Used in jewelry and collections; fine natural alexandrite can be extremely valuable, while synthetic material is decorative and comparatively inexpensive.

Geological facts

Alexandrite is famous for green in daylight and red-purple under incandescent light; this specimen’s apparent green-purple contrast may instead reflect lighting, inclusions, or a coated/synthetic stone.

Field identification & locations

Confirm with daylight/incandescent color-change testing, refractive index, specific gravity, microscope examination, and spectroscopy; avoid scratch testing. Its polished oval shape suggests a jewelry stone rather than a raw mineral specimen.