metamorphic

Likely green aventurine (quartz-rich rock)

Quartz-rich rock with possible fuchsite mica; composition cannot be confirmed from the photo

AI-generated identification · may be incorrect

Pale green-white, rough and granular with a weak sheen. Quartz has Mohs hardness 7, vitreous luster, and no cleavage; visible green mica may be softer and flaky.

Identified October 6, 2026More metamorphic →

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Physical properties

Pale green-white, rough and granular with a weak sheen. Quartz has Mohs hardness 7, vitreous luster, and no cleavage; visible green mica may be softer and flaky.

Formation & geological history

Aventurine forms when quartz-rich material crystallizes or recrystallizes with tiny mica or other mineral inclusions. Its age and specific formation environment cannot be determined from the image.

Uses & applications

Decorative stone, carvings, beads, and inexpensive jewelry; quartz-rich material may also be used as aggregate.

Geological facts

The sparkle associated with aventurine, called aventurescence, comes from reflective mineral inclusions; it is not clearly visible here.

Field identification & locations

The pale green color and granular texture suggest quartz with green inclusions, but visual identification is uncertain. Check hardness and inspect a fresh surface; commonly traded material comes from India, Brazil, and parts of Africa.