Green Jade Identification Guide
How to identify green jade, distinguish jadeite from nephrite, and rule out common imitations like serpentine, aventurine, and dyed quartz.
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What Green Jade Looks Like
"Jade" is two different minerals: jadeite (a pyroxene) and nephrite (an amphibole). Both are tough, compact, and translucent to opaque with a greasy to waxy luster when polished. Jadeite green ranges from apple-green to the prized emerald "imperial" green; nephrite tends toward spinach, olive, and mossy greens, often with cloudy or mottled patches. Neither shows distinct crystals—jade is a felted/granular interlocking mass.
Step-by-Step Field-ID Checklist
- Test toughness, not just hardness. Jade resists chipping remarkably; it will not flake like glass.
- Scratch test: both jades scratch glass; a steel knife will not scratch genuine jade.
- Feel and sound: real jade feels cool and dense; tapped beads give a clear ringing tone, not a dull plastic click.
- Look at texture under light: a fibrous/granular interlocking texture, sometimes with dimpling after polishing, is typical.
- Check the weight: jade feels heavier than glass or plastic of the same size.
Key Diagnostic Tests
- Mohs hardness: jadeite 6.5–7; nephrite 6–6.5
- Streak: white
- Fracture: splintery to granular; no cleavage visible in massive jade (exceptional toughness)
- Specific gravity: jadeite ~3.30–3.38; nephrite ~2.90–3.02 (jadeite is noticeably denser)
- No acid reaction; non-magnetic
- Jadeite often shows a slightly dimpled "orange-peel" polish; nephrite polishes smoother
Common Look-Alikes and How to Tell Them Apart
- Serpentine ("new jade"): Softer (2.5–5), scratched by a knife, lighter (SG ~2.5–2.6).
- Aventurine quartz: Hardness 7, sparkly mica/fuchsite inclusions, more uniform color.
- Dyed quartzite or chalcedony: Color may pool in cracks; magnification reveals dye concentrations.
- Glass imitation: Gas bubbles, swirls, mold seams, and warmer feel; chips conchoidally.
- Hydrogrossular garnet ("Transvaal jade"): Denser and often with black spots; distinguished by SG and optics.
- Jadeite vs nephrite: Jadeite is denser (~3.3 vs ~3.0) and often shows orange-peel polish texture and granular sparkle, while nephrite is more fibrous and slightly softer.
Where Green Jade Is Found
Jadeite's premier source is Myanmar (Burma), with deposits also in Guatemala and Russia. Nephrite comes from China, Russia (Siberia), Canada (British Columbia), New Zealand, and the United States (Wyoming, Alaska).
Frequently asked questions
How can you tell if it's real green jade?
Genuine jade is extremely tough, scratches glass but is not scratched by a knife, feels cool and dense, gives a clear ring when tapped, and has a fibrous or granular interlocking texture rather than bubbles or swirls.
What is the difference between jadeite and nephrite jade?
Jadeite is a denser pyroxene (SG ~3.3) that reaches vivid imperial green and often shows an orange-peel polish, while nephrite is a slightly softer, more fibrous amphibole (SG ~3.0) in spinach and olive greens.
What does green jade look like?
It is a translucent to opaque green stone with a smooth greasy-to-waxy luster, often mottled or cloudy, with no visible individual crystals.
Green jade vs serpentine: how do I tell them apart?
Serpentine is softer and can be scratched by a steel knife, is lighter in weight, and is less tough, whereas jade resists the knife and is far more resistant to chipping.
Is green jade dyed?
Some lower-grade jade is dyed; look for color concentrated in cracks under magnification and a uniform, unnaturally even tone, which suggests treatment.
Green Jade identified by the community
Recent Green Jade specimens identified with Rock Identifier.
