gemstone

Faceted pale-green gemstone, likely prasiolite or green quartz

Quartz (SiO₂), likely prasiolite; identification is uncertain from the photograph

AI-generated identification · may be incorrect

Hardness 7 Mohs; transparent pale green color, vitreous luster, trigonal crystal structure, and indistinct cleavage. The oval faceting and uniform clarity suggest a cut gemstone rather than a raw specimen; color may also result from treated amethyst or synthetic quartz.

Identified August 13, 2026More gemstone →

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At a glance

Common name: Faceted pale-green gemstone, likely prasiolite or green quartz
Scientific name: Quartz (SiO₂), likely prasiolite; identification is uncertain from the photograph
Category: gemstone
Identified: August 13, 2026
Method: Standard

AI Estimated Value

Approximately $10–$75 for a typical treated quartz stone; $100–$500+ for unusually large, natural, well-documented prasiolite.

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 quartz forms in hydrothermal veins and igneous pegmatites over geologic timescales; prasiolite is commonly produced by heat treatment of amethyst or citrine. Common sources include Brazil, Poland, Namibia, and the United States.

Uses & applications

Used in jewelry, especially rings and pendants, and as a collector gemstone. Quartz is also important industrially in glass, electronics, and abrasives.

Geological facts

Prasiolite is relatively uncommon naturally and is frequently heat-treated, so laboratory testing is needed for confirmation. Similar-looking materials include green glass, fluorite, peridot, and synthetic quartz.

Field identification & locations

Check hardness, refractive index, birefringence, and inclusions; quartz will scratch glass but should not be scratched by a steel blade. A gemological report is recommended because color and treatment cannot be reliably determined from the image.