mineral

Likely labradorite or another feldspar-rich rough stone

Possibly labradorite, a plagioclase feldspar: (Ca,Na)(Al,Si)₄O₈; identification is uncertain from the image

AI-generated identification · may be incorrect

Irregular, rough piece with blue-green and gold iridescent patches in a pale gray-brown matrix. Feldspar has Mohs hardness 6–6.5, vitreous luster, triclinic crystals, and two cleavages near 90°; the visible colors may be labradorescence, though the photo alone cannot confirm it.

Identified September 28, 2026More mineral →

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At a glance

Common name: Likely labradorite or another feldspar-rich rough stone
Scientific name: Possibly labradorite, a plagioclase feldspar: (Ca,Na)(Al,Si)₄O₈; identification is uncertain from the image
Category: mineral
Identified: September 28, 2026
Method: Standard

AI Estimated Value

About $1–$15 for a small, ordinary rough piece; higher-quality, strongly flashing material can be worth more.

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

If labradorite, it crystallized in slowly cooled mafic igneous rocks, commonly anorthosite, through separation of feldspar-rich layers. Such rocks form in Earth’s crust over a wide range of geological ages.

Uses & applications

Labradorite is used for cabochons, beads, carvings, and decorative stone; lower-grade rough is mainly collected or used as ornament.

Geological facts

Labradorescence is produced by light interference in fine internal feldspar layers, not by surface color. The specimen’s appearance could also reflect another mineral or surface treatment.

Field identification & locations

Look for broad blue or green flashes that move with the viewing angle, plus feldspar cleavage; avoid relying on color alone. Labradorite is notably found in Canada, Madagascar, Finland, and Norway.