metamorphic
Jadeite (Jade Ring)
NaAlSi2O6 (Sodium Aluminum Silicate)
Hardness: 6.5 to 7.0 Mohs; Color: Apple green to emerald green; Luster: Vitreous to greasy; Crystal structure: Monoclinic; Cleavage: Good but rarely seen in massive forms; SG: 3.25 to 3.35.
- Hardness
- 6
- Color
- Apple green to emerald green
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 6.5 to 7.0 Mohs; Color: Apple green to emerald green; Luster: Vitreous to greasy; Crystal structure: Monoclinic; Cleavage: Good but rarely seen in massive forms; SG: 3.25 to 3.35.
Formation & geological history
Formed in high-pressure, low-temperature metamorphic environments typical of subduction zones where oceanic plates meet continental plates.
Uses & applications
Used primarily in fine jewelry (rings, bracelets, pendants) and decorative carvings. Highly valued in Asian cultures for its beauty and spiritual significance.
Geological facts
Jadeite is one of two minerals referred to as 'Jade' (the other being Nephrite). It is tougher than steel due to its interlocking granular structure, making it incredibly resistant to fracture.
Field identification & locations
Identify by its 'cold' feel to the touch and a distinct metallic ring when tapped. Common locations include Myanmar (Burma), Guatemala, and Japan. High-quality translucent green is the most sought after.
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