metamorphic
Yellow Aventurine (or Citrine-colored Quartz)
Silicon Dioxide (SiO2) with inclusions
Hardness: 7 (Mohs scale), Color: Pale yellow to golden honey, Luster: Vitreous to waxy, Crystal Structure: Trigonal/Hexagonal (aggregate), Cleavage: None/Conchoidal fracture, Specific Gravity: 2.63–2.65
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Physical properties
Hardness: 7 (Mohs scale), Color: Pale yellow to golden honey, Luster: Vitreous to waxy, Crystal Structure: Trigonal/Hexagonal (aggregate), Cleavage: None/Conchoidal fracture, Specific Gravity: 2.63–2.65
Formation & geological history
Formed through the metamorphism of quartz-rich sedimentary rocks (quartzite) where minerals such as mica or iron oxide are trapped during recrystallization, giving it a grainy, shimmering appearance.
Uses & applications
Primarily used for decorative carvings, palm stones, jewelry (beads and cabochons), and in spiritual or metaphysical practices where it is associated with the solar plexus chakra.
Geological facts
Yellow Aventurine gets its name from 'a ventura' (by chance), referring to the discovery of aventurine glass. When it contains mica inclusions that create a shimmering effect, it is called 'aventurescence'.
Field identification & locations
Identify by its grainy, sugary texture and translucent yellow hue. Unlike solid citrine crystal, aventurine quartz often has a more opaque, metamorphic texture. Found commonly in Brazil, India, and Russia.
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