metamorphic
Red Aventurine / Orange Quartzite
Silicon Dioxide (SiO2) with hematite/goethite inclusions
Hardness: 7 Mohs; Color: Orange-red to brick red; Luster: Vitreous to dull; Crystal structure: Trigonal (hexagonal); Specific gravity: 2.64-2.69
- Hardness
- 7 Mohs
- Color
- Orange-red to brick red
- Luster
- Vitreous to dull
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Physical properties
Hardness: 7 Mohs; Color: Orange-red to brick red; Luster: Vitreous to dull; Crystal structure: Trigonal (hexagonal); Specific gravity: 2.64-2.69
Formation & geological history
Formed through the regional metamorphism of quartz-rich sandstone. The distinctive reddish hue is caused by inclusions of hematite or goethite during the crystallization process.
Uses & applications
Commonly used in jewelry as beads or cabochons, as tumbled stones for crystal healing, and as decorative landscaping material.
Geological facts
Red Aventurine is known for a metallic glitter effect called 'aventurescence' when light reflects off the mineral inclusions within the quartz.
Field identification & locations
Identify by its sandy texture (orthoquartzite base) and consistent reddish-orange color that does not scratch easily with a steel knife. Frequently found in India, Brazil, and Russia.
