metamorphic
Yellow Aventurine
Silicon Dioxide (Quartzite) with minor inclusions (SiO2)
Hardness: 6.5-7 on Mohs scale; Color: honey yellow to golden orange; Luster: Vitreous to waxy; Crystal structure: Hexagonal/Trigonal (microcrystalline); Specific gravity: 2.64-2.69.
- Hardness
- 6
- Color
- honey yellow to golden orange
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 on Mohs scale; Color: honey yellow to golden orange; Luster: Vitreous to waxy; Crystal structure: Hexagonal/Trigonal (microcrystalline); Specific gravity: 2.64-2.69.
Formation & geological history
Formed during regional metamorphism of sandstone into quartzite, where impurities such as mica or iron oxides create the characteristic yellow color and aventurescence.
Uses & applications
Commonly used in jewelry (beads, cabochons), crystal healing, meditation practices, home decor, and small ornamental carvings.
Geological facts
The name 'Aventurine' comes from the Italian 'a ventura', meaning 'by chance', originally referring to the accidental discovery of aventurine glass. The yellow variety is less common than green aventurine.
Field identification & locations
Identify by its grainy, sugary texture under the surface and slight shimmering effect (aventurescence). Found in Brazil, India, Russia, and Tanzania. Collectors look for uniform color and high translucency.
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