mineral
Polished green aventurine (likely)
Quartz aggregate, SiO₂, with green fuchsite mica inclusions
AI-generated identification · may be incorrectOpaque to translucent olive-green, polished and waxy-to-vitreous; quartz hardness about 7 Mohs, trigonal crystal structure, no cleavage, specific gravity ~2.6. The image suggests a tumbled/polished stone; exact identification is uncertain from appearance alone.
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Physical properties
Opaque to translucent olive-green, polished and waxy-to-vitreous; quartz hardness about 7 Mohs, trigonal crystal structure, no cleavage, specific gravity ~2.6. The image suggests a tumbled/polished stone; exact identification is uncertain from appearance alone.
Formation & geological history
Quartz-rich rock formed as silica crystallized or recrystallized with fine green mica inclusions, commonly during metamorphism. Its geological age depends on source deposit and cannot be determined from the image.
Uses & applications
Used for beads, cabochons, carvings, ornaments, and inexpensive jewelry.
Geological facts
Aventurine’s characteristic sparkle, called aventurescence, comes from reflective mineral inclusions; it may be subtle or absent in darker material.
Field identification & locations
Common sources include India, Brazil, Russia, and Tanzania. Look for fine glittering inclusions and quartz-like hardness; green jasper or serpentine can look similar.
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