Rock Identifier
Jade Dice (Nephrite / Jadeite (Ca2(Mg,Fe)5Si8O22(OH)2 or NaAlSi2O6)) — gemstone
gemstone

Jade Dice

Nephrite / Jadeite (Ca2(Mg,Fe)5Si8O22(OH)2 or NaAlSi2O6)

Hardness: 6.0 to 7.0 on the Mohs scale, Color: Light green to white with translucent quality, Luster: Vitreous to greasy, Crystal structure: Monoclinic (microcrystalline aggregate), Cleavage: None (very tough and interlocking fibers), Specific gravity: 2.90 to 3.34

Hardness
6
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Physical properties

Hardness: 6.0 to 7.0 on the Mohs scale, Color: Light green to white with translucent quality, Luster: Vitreous to greasy, Crystal structure: Monoclinic (microcrystalline aggregate), Cleavage: None (very tough and interlocking fibers), Specific gravity: 2.90 to 3.34

Formation & geological history

Formed under high-pressure, low-temperature metamorphic conditions in subduction zones, or via metasomatism along serpentinite contacts over millions of years.

Uses & applications

Carved into decorative objects, games like dice, and luxury jewelry items.

Geological facts

Jade has been prized in East Asian cultures for thousands of years for its durability and spiritual significance, often associated with purity and status.

Field identification & locations

Identified by its exceptional toughness, cold feel, and fibrous microcrystalline structure, commonly sourced from Myanmar, China, and British Columbia.