mineral

Green aventurine bead bracelet

Quartz (SiO₂), typically green aventurine containing fuchsite mica or other chromium-bearing inclusions

AI-generated identification · may be incorrect

Likely tumbled, polished beads with a green color and vitreous-to-waxy luster; quartz hardness is about 7 Mohs, with no obvious cleavage and a hexagonal crystal structure. The image is blurred, so jade or dyed glass cannot be ruled out without testing.

Identified August 19, 2026More mineral →

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Physical properties

Formation & geological history

Aventurine forms when quartz crystallizes with reflective mineral inclusions, commonly in metamorphic or hydrothermal environments; its exact geological age depends on the deposit. Green color generally comes from fuchsite mica or chromium minerals.

Uses & applications

Used for inexpensive jewelry, ornaments, and lapidary carvings. Common commercial bracelets typically have modest value.

Geological facts

Aventurine’s characteristic sparkle, called aventurescence, comes from light reflecting off platy inclusions; evenly colored, non-sparkly beads may instead be dyed quartz, serpentine, jade, or glass.

Field identification & locations

Common sources include India, Brazil, Russia, and Tanzania. Check for tiny glittering inclusions, quartz-like hardness, cool density, and natural color variation; a gemological test is needed for reliable identification.