Rock Identifier
Yellow Aventurine (Silica (SiO2) with inclusions) — mineral
mineral

Yellow Aventurine

Silica (SiO2) with inclusions

Hardness: 7 Mohs; Color: Yellow to golden-orange; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal (microcrystalline); Cleavage: None; SG: 2.63 - 2.65.

Hardness
7 Mohs
Color
Yellow to golden-orange
Luster
Vitreous to waxy
Identified More mineral

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Physical properties

Hardness: 7 Mohs; Color: Yellow to golden-orange; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal (microcrystalline); Cleavage: None; SG: 2.63 - 2.65.

Formation & geological history

Formed primarily in metamorphic rocks where quartzite is subjected to high heat and pressure, allowing mica or iron-oxide inclusions to integrate into the quartz lattice.

Uses & applications

Used extensively in jewelry for beads and cabochons, decorative ornaments, and widely sold among crystal healing collectors as a 'stone of prosperity'.

Geological facts

The characteristic shimmer seen in some aventurine is called 'aventurescence', which is caused by platy inclusions of minerals like mica or hematite reflecting light.

Field identification & locations

Identified in the field by its hardness (scratches glass), lack of crystal faces when tumbled, and its uniform yellow coloration often with tiny internal glints. Commonly found in India, Brazil, and Russia.