mineral
Chrysoprase
Chalcedony (Silicon Dioxide, SiO2), flavored by Nickel
AI-generated identification · may be incorrectHardness: 6.5-7 (Mohs); Color: Apple-green to deep green; Luster: Vitreous to waxy; Crystal structure: Hexagonal (cryptocrystalline); Specific Gravity: 2.6-2.64
- Hardness
- 6
- Color
- Apple-green to deep green
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 (Mohs); Color: Apple-green to deep green; Luster: Vitreous to waxy; Crystal structure: Hexagonal (cryptocrystalline); Specific Gravity: 2.6-2.64
Formation & geological history
Formed by the deep weathering or lateritization of nickeliferous serpentinites or other ultramafic ophiolite rocks. It is most common in arid climates.
Uses & applications
Primary use is in jewelry (cabochons, beads) and ornamental carvings. It is the most valuable variety of chalcedony.
Geological facts
Legend says that Alexander the Great always wore a chrysoprase belt into battle. It is often mistaken for higher-end imperial jade, leading to the nickname 'Australian Jade.'
Field identification & locations
Identify by its distinct 'apple green' color and waxy appearance. Commonly found in Queensland and Western Australia, Germany, Poland, and Arizona.
