gemstone

Amethyst (likely synthetic or treated)

Purple quartz, SiO₂; color caused mainly by trace iron and irradiation

AI-generated identification · may be incorrect

The faceted stone appears purple with a vitreous luster, but its small size and setting prevent reliable identification from the image. Quartz has Mohs hardness 7, a trigonal crystal structure, and no cleavage; amethyst typically has specific gravity near 2.65.

Identified September 23, 2026More gemstone →

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At a glance

Common name: Amethyst (likely synthetic or treated)
Scientific name: Purple quartz, SiO₂; color caused mainly by trace iron and irradiation
Category: gemstone
Identified: September 23, 2026
Method: Standard

AI Estimated Value

Approximately $5–$100 for a small mounted amethyst, depending on size, quality, and whether it is natural; the image alone does not establish 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

Natural amethyst forms in silica-rich hydrothermal fluids, commonly lining volcanic-rock cavities; deposits range from geologically recent to ancient. The image cannot establish whether this stone is natural, synthetic, or treated.

Uses & applications

Used in jewelry and as a collectible gemstone; quartz also has industrial uses in electronics and abrasives.

Geological facts

Amethyst’s purple color is associated with iron impurities and natural radiation; heat treatment can alter its color.

Field identification & locations

The faceted purple appearance is consistent with amethyst, but a gemological test is needed to distinguish natural from synthetic material. Common sources include Brazil, Uruguay, Zambia, and Siberia.