Serpentine is one of the most commonly misidentified stones sold as jade. Marketed under names like “Xiuyan jade” or “new jade,” it reaches store shelves at a fraction of jadeite’s price — and many buyers never realize the switch. The jade vs serpentine difference comes down to hardness, luster, weight, color, and feel, and once you know these five tests, you can spot the real thing every time.
Jade vs Serpentine Difference: 5 Simple Tests Anyone Can Use
Both stones look green and polished, but their physical properties are worlds apart. Jadeite is a pyroxene mineral with a tightly interlocking crystal structure, while serpentine is a phyllosilicate formed by the alteration of magnesium-rich rocks. That structural gap is what makes every test below reliable — no lab equipment required. The Gemological Institute of America recommends similar field tests for preliminary identification before sending a stone for certification.
5 Simple Tests to Spot Serpentine Before You Buy
1. Hardness — Scratch It
Jadeite ranks 6.5–7 on the Mohs scale, meaning it resists scratches from a steel knife. Serpentine sits at just 2.5–5.5, so a steel blade or even a copper coin will leave a mark. Press the edge of a key against an inconspicuous spot: if it scratches, you are looking at serpentine, not jadeite. This is the fastest and most reliable field test.
2. Luster — Read the Surface
Jadeite’s vitreous-to-greasy luster gives it a bright, almost mirror-like polish. Serpentine’s waxy or resinous finish looks duller by comparison, even after professional polishing. Hold both stones under the same light — jadeite will throw a sharper reflection. You can also browse our jadeite ring collection to see genuine vitreous luster up close.
3. Weight — Heft It in Your Palm
Jadeite has a specific gravity of 3.30–3.38, while serpentine ranges from 2.44–2.82. Pick up a serpentine bangle and a jadeite bangle of the same size, and the difference in heft is immediately obvious: jadeite feels noticeably heavier. If a “jade” bangle feels suspiciously light, it may be serpentine.
4. Color and Transparency — Look Deeper
Serpentine tends toward yellowish-green with a cloudy, semi-translucent body. Jadeite’s color range is far broader — from emerald green to lavender, white, and even red — and its best examples show vibrant, even saturation. Hold each stone against a light source; jadeite transmits light more uniformly, while serpentine often looks patchy. Our jadeite pendant selection shows the kind of even translucency you should expect from genuine jadeite.
5. Temperature — Trust Your Fingers
Real jadeite feels cool to the touch and takes several seconds to warm against your skin because of its high thermal conductivity. Serpentine warms up much faster. Press both stones against your cheek — the cooler one is jadeite. This tactile test is subtle but useful when comparing pieces side by side.
Why Sellers Confuse the Two
Serpentine is inexpensive, widely available, and visually similar to lower-grade jadeite — a combination that tempts some sellers to market it as “serpentine jade” or “new jade.” Chinese Xiuyan County produces the bulk of the world’s serpentine, and while it is a legitimate and beautiful gemstone in its own right, it is not true jade. In some markets, serpentine carvings are sold without any mineral identification at all, leaving buyers to assume they are purchasing jadeite. Understanding the jade vs serpentine difference protects you from paying jadeite prices for serpentine and ensures every piece in your collection is what the label claims.
Frequently Asked Questions
Is serpentine jade valuable?
Serpentine has decorative and collector value but is far less valuable than jadeite. Fine jadeite can command thousands per carat, while serpentine typically sells for a fraction of that price.
Can serpentine be sold as jade?
Some sellers market serpentine as “serpentine jade” or “new jade,” which is misleading. Serpentine is a separate mineral species. Always ask for a gemological certificate before buying.
What is Xiuyan jade?
Xiuyan jade is the trade name for serpentine mined in Xiuyan County, Liaoning Province, China. It is a genuine gemstone but belongs to the serpentine group, not the jadeite or nephrite families.
Now that you can spot the jade vs serpentine difference, you are ready to shop with confidence. Explore our full collection of certified jadeite — every piece is genuine jadeite, guaranteed.
