gemstone
Chinese Jade (Green Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
Hardness: 6-7 on Mohs scale; Color: Deep dark green with rich translucency; Luster: Vitreous to greasy; Crystal Structure: Monoclinic (microcrystalline/fibrous aggregate); Cleavage: None distinct.
- Hardness
- 6-7 on Mohs scale
- Color
- Deep dark green with rich translucency
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Deep dark green with rich translucency; Luster: Vitreous to greasy; Crystal Structure: Monoclinic (microcrystalline/fibrous aggregate); Cleavage: None distinct.
Formation & geological history
Formed under high-pressure, low-temperature metamorphic conditions in serpentinates or subduction zone environments, often found as alluvial boulders or in-situ deposits.
Uses & applications
Carved into intricate traditional ornaments, decorative sculptures, amulets, and fine jewelry.
Geological facts
Jade has been revered in Chinese culture for thousands of years as a stone of nobility, virtue, and protection. Deep green varieties are particularly prized.
Field identification & locations
Identified by its exceptional toughness, fibrous micro-structure, and specific gravity around 2.9 to 3.3. Commonly sourced from regions in China, Myanmar, and Central Asia.
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