Green Quartzite (Aventurine variety)

Hardness: 7 (Mohs scale), Color: Pale to medium green, Luster: Vitreous to waxy, Structure: Trigonal/Hexagonal (microcrystalline), Cleavage: None (conchoidal fracture), Specific Gravity: 2.64-2.69

Formed through the regional metamorphism of quartz-rich sandstone. High heat and pressure cause quartz grains to recrystallize and fuse. The green color is typically derived from the presence of tiny chromium-rich mica minerals (fuchsite) trapped within the quartz matrix during formation.

Commonly used for ornamental carvings, landscape stones, decorative aggregate, and in 'healing' crystal collections. Fine specimens are used in jewelry as cabochons or beads.

Green aventurine is often called the 'Stone of Opportunity' in metaphysical circles. This specific specimen’s rounded edges suggest it has been water-worn or mechanically tumbled.

Identify in the field by its inability to be scratched by a steel knife and its lack of carbonate reaction (fizzing) with acid. It is commonly found in India, Brazil, and parts of Russia. This specimen shows 'platy' inclusions that are characteristic of green mica varieties.