mineral

Polished blue-green feldspar-rich slab, likely amazonite

Amazonite, green microcline (KAlSi₃O₈), possibly with quartz and albite inclusions

AI-generated identification · may be incorrect

Typically Mohs hardness 6–6.5, vitreous to pearly luster, turquoise-green to blue-green color, triclinic crystal structure, and two good cleavage directions. The specimen appears cut and polished, with dark inclusions and mottled coloration.

Identified August 31, 2026More mineral →

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At a glance

Common name: Polished blue-green feldspar-rich slab, likely amazonite
Scientific name: Amazonite, green microcline (KAlSi₃O₈), possibly with quartz and albite inclusions
Category: mineral
Identified: August 31, 2026
Method: Standard

AI Estimated Value

Approximately $20–$150 for a typical polished slab; exceptional color, pattern, size, or provenance may bring $200–$500+.

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

Forms in silica-rich granitic pegmatites during late-stage cooling of magma; commonly associated with quartz, albite, and mica. Most amazonite is geologically Precambrian to Phanerozoic in host pegmatites, though the specimen’s age cannot be determined visually.

Uses & applications

Used primarily as a lapidary stone, ornamental slab, cabochon, and mineral-collection specimen; occasionally used in jewelry. Quality depends on saturated color, translucency, pattern, size, and polish.

Geological facts

Amazonite’s color comes from trace lead and water-related defects in microcline’s crystal structure, not copper. The image may also represent another green feldspar-bearing rock, since exact identification requires mineralogical testing.

Field identification & locations

Look for blue-green color, white streaks or perthitic patterns, feldspar cleavage, and hardness near 6; it should scratch glass but not quartz. Common sources include Colorado and Virginia (USA), Brazil, Russia, Madagascar, and Mozambique.