metamorphic
Yellow Aventurine
Quartzite with inclusions (SiO2)
Hardness: 6.5-7 (Mohs scale); Color: Creamy yellow to golden-orange; Luster: Vitreous to waxy; Crystal structure: Trigonal (granular aggregate); Cleavage: None/Conchoidal fracture; Specific gravity: 2.63-2.65
- Hardness
- 6
- Color
- Creamy yellow to golden-orange
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 (Mohs scale); Color: Creamy yellow to golden-orange; Luster: Vitreous to waxy; Crystal structure: Trigonal (granular aggregate); Cleavage: None/Conchoidal fracture; Specific gravity: 2.63-2.65
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone. Its distinct yellow hue is typically caused by inclusions of minerals like muscovite or mica during the crystallization process. It is found in deposits millions of years old.
Uses & applications
Predominantly used as a gemstone for jewelry (beads, pendants), ornamental carvings, and in the metaphysical/holistic healing market.
Geological facts
Yellow Aventurine is known for 'aventurescence,' an optical effect caused by the reflection of light off tiny plate-like inclusions within the stone, though it is often more subtle in yellow varieties than in green ones.
Field identification & locations
Identify in the field by its grainy, sugary texture and inability to be scratched by a steel knife. It is commonly found in India, Brazil, and Russia. For collectors, look for uniform color and a slight shimmering quality.
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