mineral

Tumbled green aventurine quartz

Quartz, silicon dioxide (SiO₂), with green fuchsite mica inclusions

AI-generated identification · may be incorrect

Pale green, translucent, glassy to waxy luster; massive and cryptocrystalline rather than showing crystal faces. Hardness about 6.5–7 Mohs, no cleavage, specific gravity approximately 2.6–2.7. The smooth heart shape is human-carved or polished.

Identified August 21, 2026More mineral →

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Physical properties

Formation & geological history

Forms when quartz-rich material crystallizes with dispersed chromium-bearing fuchsite or other green inclusions, commonly in metamorphic rocks. Precise geological age and locality cannot be determined from the photograph.

Uses & applications

Used for beads, pendants, cabochons, carvings, and ornamental objects; also sold as a decorative “healing stone.”

Geological facts

Aventurine’s characteristic sparkle, called aventurescence, comes from reflective mica or hematite inclusions; this piece appears only weakly sparkly because it is translucent and polished.

Field identification & locations

Identify it by its uniform green color, quartz-like hardness, translucency, and occasional glitter; it should scratch glass but not be scratched by a steel knife. Common sources include India, Brazil, Russia, and Tanzania.