metamorphic
Jadeite Jade
NaAlSi2O6 (Sodium Aluminum Silicate)
Hardness: 6.5–7.0 (Mohs); Color: Mottled emerald green, apple green, or forest green; Luster: Vitreous to greasy; Crystal structure: Monoclinic (fibrous aggregates); Cleavage: Prismatic; Specific gravity: 3.25–3.35
- Hardness
- 6
- Color
- Mottled emerald green, apple green, or forest green
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 6.5–7.0 (Mohs); Color: Mottled emerald green, apple green, or forest green; Luster: Vitreous to greasy; Crystal structure: Monoclinic (fibrous aggregates); Cleavage: Prismatic; Specific gravity: 3.25–3.35
Formation & geological history
Formed in high-pressure, low-temperature metamorphic environments, typically within subduction zones. Most deposits are associated with serpentinites.
Uses & applications
Primarily used in jewelry (beads, cabochons, bangles) and ornamental carvings. Historically used for weapons and tools due to its extreme toughness.
Geological facts
In Chinese culture, jade is known as 'the stone of heaven' and is more highly valued than gold. While both Jadeite and Nephrite are called 'Jade,' Jadeite is the rarer and more valuable of the two.
Field identification & locations
Identify in the field by its distinct greasy luster, cold feel, and high density. It cannot be scratched by a steel knife. Common locations include Myanmar (highest quality), Guatemala, and Russia.
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