Rock Identifier
Likely polished jade or serpentine fragment (Indeterminate; possible nephrite jade (fibrous tremolite, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂) or serpentine-group mineral) — mineral
mineral

Likely polished jade or serpentine fragment

Indeterminate; possible nephrite jade (fibrous tremolite, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂) or serpentine-group mineral

AI-generated identification · may be incorrect

Small, pale green-white, opaque, smoothly polished and rectangular with rounded edges; likely waxy to silky luster and Mohs hardness about 5–6.5. The image is insufficient to distinguish jade from serpentine, soapstone, or another green mineral.

Identified More mineral
Explore Likely polished jade or serpentine fragment in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

Physical properties

Small, pale green-white, opaque, smoothly polished and rectangular with rounded edges; likely waxy to silky luster and Mohs hardness about 5–6.5. The image is insufficient to distinguish jade from serpentine, soapstone, or another green mineral.

Formation & geological history

Jade forms through metamorphism of magnesium-rich rocks, commonly in subduction-zone mélanges; serpentine forms by hydration of ultramafic mantle rocks. Ages vary widely from ancient to modern geological settings.

Uses & applications

Potentially used as a bead, carving blank, or decorative cabochon; true jade can be valuable, while common serpentine is inexpensive ornamental material.

Geological facts

Color alone cannot authenticate jade: density, hardness, toughness, microscopic texture, and laboratory testing are important. Nephrite is exceptionally tough because of its interlocking fibrous crystal structure.

Field identification & locations

Common jade sources include Myanmar, China, New Zealand, Canada, and Guatemala; serpentine is widespread. Check translucency, heft, scratch resistance, and specific gravity, but avoid destructive testing on a valuable piece.