mineral

Chrysoprase

Chalcedony (Silicon Dioxide, SiO2), flavored by Nickel

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

Hardness: 6
Color: Apple-green to deep green
Luster: Vitreous to waxy

Identified April 17, 2026More mineral →

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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.

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mineral