mineral

Amazonite-like microcline bead bracelet

Microcline feldspar, KAlSi₃O₈; likely mixed with pale amazonite, quartz, or other feldspar beads

AI-generated identification · may be incorrect

Hardness about 6–6.5 Mohs; pale blue-green, white, and gray colors; vitreous to pearly luster; triclinic crystal structure with two cleavages at nearly 90°. The beads are polished and drilled, obscuring natural crystal faces.

Identified September 21, 2026More mineral →

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Physical properties

Formation & geological history

Microcline forms in potassium-rich, slowly cooled igneous rocks such as granites and pegmatites, commonly during the Precambrian to Phanerozoic. The exact bead material cannot be confirmed from the photograph alone.

Uses & applications

Used as ornamental stone, jewelry, carvings, and collectible mineral material; ordinary polished beads generally have modest value.

Geological facts

Amazonite is the blue-green variety of microcline, with color caused largely by lead and water-related defects in the crystal lattice. Similar-looking pale beads may be dyed jade, aventurine, calcite, or chalcedony.

Field identification & locations

Look for feldspar’s blue-green color, blocky cleavage, and occasional white streaks or grid-like perthitic pattern; test hardness against glass, but avoid damaging jewelry. Common sources include Colorado, Brazil, Madagascar, Russia, and China.