mineral
Green Quartz (Prasiolite / Chlorite-Included Quartz Pebble)
Silicon Dioxide (SiO2) with micro-inclusions
Hardness: 7 on Mohs scale. Color: Translucent white to pale greenish-olive. Luster: Vitreous (glassy) to waxy when water-worn. Crystal System: Trigonal. Cleavage: None (conchoidal fracture). Specific Gravity: ~2.65.
- Hardness
- 7 on Mohs scale
- Color
- Translucent white to pale greenish-olive
- Luster
- Vitreous (glassy) to waxy when water-worn
Identified More mineral →
Explore Green Quartz (Prasiolite / Chlorite-Included Quartz Pebble) in the encyclopedia →Identify your own rocks.
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Physical properties
Hardness: 7 on Mohs scale. Color: Translucent white to pale greenish-olive. Luster: Vitreous (glassy) to waxy when water-worn. Crystal System: Trigonal. Cleavage: None (conchoidal fracture). Specific Gravity: ~2.65.
Formation & geological history
Formed via hydrothermal deposition in veins or cavities where silica crystallizes alongside iron or chlorite minerals. Naturally tumbled and rounded by wave action in beach sand or riverbed sediments.
Uses & applications
Mainly used as a small decorative beach pebble, tumbling rock, or in handcrafted wire-wrapped lapidary jewelry.
Geological facts
Beach-pebble quartz can range widely in color depending on trace mineral inclusions. Green shades are often caused by microscopic inclusions of chlorite, epidote, or actinolite trapped inside the quartz structure during crystal growth.
Field identification & locations
Identify in the field by its hardness (scratches glass), smooth water-worn texture, and translucent appearance with greenish clouding. Commonly found along gravel beaches and riverbanks worldwide. Small, beach-found pebbles like this hold minimal commercial value ($1-$5 for tumbling or craft lots).
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