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

Yellow Jade

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

Hardness: 6-7 on the Mohs scale. Color: Vivid yellow. Luster: Vitreous to greasy when polished. Crystal structure: Monoclinic. Cleavage: Poor in jadeite, distinct in nephrite. Specific gravity: 2.90-3.40.

Hardness
6-7 on the Mohs scale
Color
Vivid yellow
Luster
Vitreous to greasy when polished
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Physical properties

Hardness: 6-7 on the Mohs scale. Color: Vivid yellow. Luster: Vitreous to greasy when polished. Crystal structure: Monoclinic. Cleavage: Poor in jadeite, distinct in nephrite. Specific gravity: 2.90-3.40.

Formation & geological history

Formed under high-pressure, low-temperature metamorphic conditions, typically in serpentinite belts and subduction zone environments over millions of years.

Uses & applications

Widely used in ornamental carvings, jewelry, tumbled stones, and spiritual or metaphysical applications.

Geological facts

Jade has been prized in Asian cultures for thousands of years, symbolizing purity, grace, and nobility. Natural yellow jade is relatively rare and highly valued.

Field identification & locations

Identified by its waxy-to-greasy luster, high toughness, and warm yellow coloration. Commonly sourced from Myanmar, China, and Guatemala.