metamorphic
Jadeite Jade
Sodium Aluminum Silicate (NaAlSi2O6)
Hardness: 6.5-7 (Mohs), Color: Apple green to emerald green (imperial), Luster: Vitreous to greasy, Crystal structure: Monoclinic, Cleavage: Good in two directions but rarely seen in aggregate form, Specific Gravity: 3.24-3.43
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs), Color: Apple green to emerald green (imperial), Luster: Vitreous to greasy, Crystal structure: Monoclinic, Cleavage: Good in two directions but rarely seen in aggregate form, Specific Gravity: 3.24-3.43
Formation & geological history
Formed in metamorphic rocks under high pressure and low temperature conditions, typically in subduction zones. Most high-quality specimens date back to the Mesozoic era.
Uses & applications
Primarily used for high-end jewelry, ornamental carvings, and talismans. Highly valued in Asian cultures as a symbol of protection and prosperity.
Geological facts
Jadeite is one of two minerals known as 'Jade' (the other being Nephrite). The most prized variety is the translucent 'Imperial Jade', which was historically reserved for Chinese emperors.
Field identification & locations
Identify by its extreme toughness, cold feel to the touch, and distinct 'clink' sound when struck. Common high-quality sources include Myanmar (Burma), Guatemala, and Russia.
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