metamorphic
Jadeite
Jadeite (NaAlSi2O6)
Hardness: 6.5–7 (Mohs). Color: Light to dark green, mottled white. Lustre: Vitreous to greasy. Crystal Structure: Monoclinic (granular aggregate). Specific Gravity: 3.24–3.43.
- Hardness
- 6
- Color
- Light to dark green, mottled white
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Physical properties
Hardness: 6.5–7 (Mohs). Color: Light to dark green, mottled white. Lustre: Vitreous to greasy. Crystal Structure: Monoclinic (granular aggregate). Specific Gravity: 3.24–3.43.
Formation & geological history
Formed in high-pressure, low-temperature metamorphic environments (subduction zones) where fluids interact with serpentinite. Found in various geological ages ranging from Paleozoic to Mesozoic.
Uses & applications
Primary use is in fine jewelry (beads, bangles, carvings), ornamental art, and historical weapon making due to its extreme toughness.
Geological facts
Jadeite is one of two minerals referred to as 'Jade' (the other being Nephrite). It is considered the more valuable variety and has been revered in Chinese culture for thousands of years as a symbol of prosperity and imperial power.
Field identification & locations
Identify by its 'mottled' or grainy texture compared to the smooth, waxy look of nephrite. Often cold to the touch and rings when struck. Common locations: Myanmar (Burma), Guatemala, Japan, and California.
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