
mineral
Yellow Quartz (Citrine-colored Quartz Pebble)
Silicon Dioxide (SiO2)
Hardness: 7 on Mohs scale; Color: Pale yellow to golden honey; Luster: Vitreous (glassy); Crystal structure: Hexagonal/Trigonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Pale yellow to golden honey
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 7 on Mohs scale; Color: Pale yellow to golden honey; Luster: Vitreous (glassy); Crystal structure: Hexagonal/Trigonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65
Formation & geological history
Formed through the cooling of silica-rich hydrothermal fluids in veins or granite pegmatites. This specific specimen appears to be a water-worn, tumbled pebble likely eroded from its primary source over millions of years.
Uses & applications
Used primarily for decorative purposes, stone collection, lapidary work (tumbling/polishing), and in 'healing crystal' practices as a manifestation stone.
Geological facts
Natural yellow quartz is often rare; most commercial citrine is actually heat-treated amethyst. This specimen's pale, cloudy appearance suggests it is a natural quartzite or ferruginous quartz pebble colored by iron oxides.
Field identification & locations
Identify it by its inability to be scratched by a steel knife and its lack of cleavage. It is commonly found in riverbeds and coastal areas where harder minerals accumulate after softer rocks have eroded away.
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mineral