gemstone
Green Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
AI-generated identification · may be incorrectHardness: 6.5 to 7 for jadeite, 6 to 6.5 for nephrite. Color: Pale to dark green, white, or mottled. Luster: Vitreous to greasy. Crystal structure: Monoclinic. Cleavage: Indistinct. Specific gravity: 3.3 to 3.4 for jadeite, 2.95 to 3.1 for nephrite.
- Hardness
- 6
- Color
- Pale to dark green, white, or mottled
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 6.5 to 7 for jadeite, 6 to 6.5 for nephrite. Color: Pale to dark green, white, or mottled. Luster: Vitreous to greasy. Crystal structure: Monoclinic. Cleavage: Indistinct. Specific gravity: 3.3 to 3.4 for jadeite, 2.95 to 3.1 for nephrite.
Formation & geological history
Formed under high-pressure, low-temperature metamorphic conditions, typically in serpentinite convergence zones or subduction zones.
Uses & applications
Widely used in fine jewelry, ornamental carvings, decorative objects, and historical weaponry.
Geological facts
Jade has been prized in China for over 5,000 years, symbolizing purity, status, and moral integrity. It is actually comprised of two distinct mineral species: jadeite and nephrite.
Field identification & locations
Can be identified in the field by its extreme toughness, density, and characteristic fibrous or granular texture. Found notably in Myanmar, China, Guatemala, and parts of the USA.
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