Chalcedony is a radial aggregate of microscopic quartz fibres, mostly grey to whitish-grey (various occurrences), rarer bluish to blue (Namibia).
Facts:
- Mohs hardness: 6.5
- Mineral: Quartz
- Chemistry: SiO2
Chalcedony is a radial aggregate of microscopic quartz fibres, mostly grey to whitish-grey (various occurrences), rarer bluish to blue (Namibia).
Facts:
Mohs hardness: 6.5...
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About Chalcedony
Chalcedony is a radial aggregate of microscopic quartz fibres, mostly grey to whitish-grey (various occurrences), rarer bluish to blue (Namibia).
Facts:
- Mohs hardness: 6.5
- Mineral: Quartz
- Chemistry: SiO2
