mineral
Yellow Quartz Pebble
SiO2 (Silicon Dioxide)
Hardness: 7 on Mohs scale; Color: Pale yellow to translucent gold; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific gravity: Approx 2.65
- Hardness
- 7 on Mohs scale
- Color
- Pale yellow to translucent gold
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 7 on Mohs scale; Color: Pale yellow to translucent gold; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific gravity: Approx 2.65
Formation & geological history
Formed in hydrothermal veins or igneous rocks like granite, subsequently weathered out and rounded by water transport in riverbeds or marine environments
Uses & applications
Used for decorative landscaping, jewelry (small tumbled stones), spiritual/metaphysical collecting, and industrial glass/silicon manufacturing
Geological facts
Yellow varieties of quartz are often called Citrine if naturally colored by iron, though many commercial pebbles are heat-treated amethyst or simply iron-stained common quartz
Field identification & locations
Identified by its high hardness (scratches glass), waxy to glassy luster, and smooth water-worn surface; commonly found in gravel pits and river beds worldwide
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Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral
Nephrite Jade
Nephrite
Mineral/Rock
Granite
Granite (Phaneritic intrusive igneous rock)
igneous