Rock Identifier
Green jade bangle (Jadeite or nephrite (jade); exact species cannot be confirmed visually) — gemstone
gemstone

Green jade bangle

Jadeite or nephrite (jade); exact species cannot be confirmed visually

AI-generated identification · may be incorrect

Typically Mohs 6–7, opaque to slightly translucent, dark green, vitreous-to-waxy luster, and fine-grained interlocking structure; jade has toughness rather than prominent cleavage. The uniformly polished ring is likely carved and finished jade, though serpentine or dyed stone is possible.

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Physical properties

Typically Mohs 6–7, opaque to slightly translucent, dark green, vitreous-to-waxy luster, and fine-grained interlocking structure; jade has toughness rather than prominent cleavage. The uniformly polished ring is likely carved and finished jade, though serpentine or dyed stone is possible.

Formation & geological history

Jadeite forms in high-pressure, low-temperature subduction-zone rocks; nephrite forms through metamorphic alteration, commonly involving ultramafic rocks. Jade deposits range from Paleozoic to Cenozoic in age, depending on locality.

Uses & applications

Used for bangles, carvings, beads, and other jewelry because of exceptional toughness; high-quality jade is also culturally significant and collectible.

Geological facts

“Jade” is a trade term for two distinct minerals: jadeite and nephrite. Color alone cannot reliably distinguish them; laboratory testing, density, refractive index, and spectroscopy are preferred.

Field identification & locations

Common sources include Myanmar, Guatemala, China, Russia, Canada, New Zealand, and Wyoming. Field clues include unusually high toughness, granular texture, and density around 2.9–3.3; avoid relying on scratch tests for a finished bangle.