metamorphic

Red aventurine quartzite (likely)

Quartzite; predominantly microcrystalline quartz (SiO₂) with iron-oxide and feldspar impurities

AI-generated identification · may be incorrect

Hardness about 7 Mohs; brick-red to pink with white quartz-rich patches, opaque, and generally vitreous to sugary luster. Quartz grains are tightly interlocked, giving massive texture and no prominent cleavage; exact identification is uncertain from an image alone.

Identified September 21, 2026More metamorphic →

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Physical properties

Formation & geological history

Formed when quartz-rich sandstone was recrystallized under metamorphic heat and pressure, likely during a Precambrian or Paleozoic mountain-building event. Iron oxides produce the red coloration.

Uses & applications

Used as decorative stone, aggregate, landscaping rock, and occasionally for cabochons or carvings; durable quartzite can serve as building or paving stone.

Geological facts

It may be marketed as “red quartzite,” “red aventurine,” or occasionally confused with red jasper. A steel or glass scratch test helps distinguish quartzite from softer red sedimentary rocks.

Field identification & locations

Common sources include India, Brazil, Russia, and the United States. Look for a granular quartz texture and hardness near 7; strong acid reaction would indicate carbonate contamination rather than pure quartzite.