metamorphic
Green Jade (Nephrite / Jadeite Bead)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
Hardness: 6.0-6.5 (Nephrite) / 6.5-7.0 (Jadeite), Color: Light translucent green, Luster: Waxy to greasy, Crystal Structure: Monoclinic, Cleavage: None (fibrous/interlocking microcrystalline structure with extreme toughness)
- Hardness
- 6
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Physical properties
Hardness: 6.0-6.5 (Nephrite) / 6.5-7.0 (Jadeite), Color: Light translucent green, Luster: Waxy to greasy, Crystal Structure: Monoclinic, Cleavage: None (fibrous/interlocking microcrystalline structure with extreme toughness)
Formation & geological history
Formed through high-pressure, low-temperature metamorphic processes, often associated with subduction zones or serpentinite bodies where silica-rich fluids interact with ultramafic rocks.
Uses & applications
Used primarily in jewelry, carved beads, ornamental art, cabochons, and traditional amulets due to its historical status and toughness.
Geological facts
Nephrite jade is one of the toughest natural minerals on Earth, even stronger than steel against impact due to its interlocking fibrous crystal structure.
Field identification & locations
Identified by its cool feel, greasy to waxy luster, light translucency, and resistance to scratching with standard steel. Commonly found in China, Myanmar, New Zealand, Canada, and Russia.
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