metamorphic
Jade (Jadeite/Nephrite)
NaAlSi2O6 (Jadeite) / Ca2(Mg,Fe)5Si8O22(OH)2 (Nephrite)
Hardness: 6.0-7.0; Color: Emerald green (Imperial), white, lavender; Luster: Vitreous to greasy; Crystal structure: Monoclinic; Cleavage: None/Splintery fracture; SG: 2.9-3.4
- Hardness
- 6
- Color
- Emerald green (Imperial), white, lavender
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 6.0-7.0; Color: Emerald green (Imperial), white, lavender; Luster: Vitreous to greasy; Crystal structure: Monoclinic; Cleavage: None/Splintery fracture; SG: 2.9-3.4
Formation & geological history
Formed in metamorphic rocks under high pressure and low temperature conditions, often associated with subduction zones. Typically found in serpentinite deposits.
Uses & applications
Primarily used in high-end jewelry (bangles, pendants), decorative carvings, and historical artifacts. Also used in some industrial precision tools due to its extreme toughness.
Geological facts
Jade is actually two different minerals: Jadeite and Nephrite. Jadeite is rarer and more valuable. It is historically known as the 'Stone of Heaven' in Chinese culture, symbolizing purity and longevity.
Field identification & locations
Identify by its exceptional toughness (resistance to chipping), cold feel to the touch, and distinct 'clinking' sound when two pieces are tapped together. Found in Myanmar (Burma), Guatemala, and Russia.
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