Guide · gems
How to Tell If Jade Is Real: A Jeweler's Guide to Value
By Carlos Montejano, founder of Gold Shield
Short answer: To tell if jade is real, check its key physical properties: it should feel cold, heavy, and smooth to the touch. Genuine jade (jadeite or nephrite) is dense and hard, and when tapped, it produces a high-pitched, bell-like chime, unlike the dull thud of fakes like serpentine or glass.
How do you tell if jade is real?
The most reliable at-home methods for telling if jade is real involve observing its physical properties, which differ significantly from common imitations. Genuine jade, which refers to either nephrite or jadeite, feels distinctly cold and dense when you first pick it up, warming slowly in your hand. Fakes made of plastic or glass often feel warmer or lighter than expected. You can also perform a sound test by tapping it gently with a metal object; real jade will emit a clear, high-pitched ringing sound, almost like a small bell. Fakes will produce a flat, dull clink. Look closely at the stone's surface—real jade often has tiny fibrous or crystalline inclusions, whereas materials like glass might have small air bubbles.
What is the difference between jadeite and nephrite?
Jadeite and nephrite are the only two minerals correctly called jade, but they have distinct chemical compositions and properties. Jadeite is a sodium aluminum silicate and is the rarer, harder, and generally more valuable of the two, prized for its intense colors and high translucency. Nephrite is a calcium magnesium iron silicate with a fibrous internal structure that makes it incredibly tough, though it is slightly softer than jadeite. Most of the jade people encounter, especially in antique carvings, is nephrite, which tends to have more muted, spinach-green or creamy white tones. Jadeite can come in a spectacular range of colors, including the famous emerald-green “Imperial Jade.”
How much is real jade worth?
The value of real jade spans one of the widest ranges of any gemstone, from less than a dollar per carat to over $3 million per carat for the absolute finest quality. Nephrite jade is more common and affordable, with prices for good-quality material often ranging from $5 to $100 per carat. The value of jadeite, however, can be astronomical. Its price depends on color saturation, translucency, and texture. A small, decent-quality jadeite cabochon might cost a few hundred dollars, while top-tier, vividly colored, and highly translucent Imperial Jade can command prices that rival or exceed those of high-quality diamonds. Lavender, red, and icy white jadeites are also highly valued.
What are common fake jade materials?
Many green stones are sold as jade, but the most common fakes I see in my workshop are serpentine, aventurine quartz, and chrysoprase. Serpentine, sometimes deceptively called “New Jade” or “Olive Jade,” is much softer and less dense. Aventurine is a type of quartz that gets its green color from fuchsite inclusions, but it has a granular, sparkly appearance that jade lacks. Other simulants include prehnite, hydrogrossular garnet, and even dyed marble, which can be easily spotted as it is very soft and porous. The most deceptive fakes can be made of glass, which can mimic the color and translucency but will often contain tiny, perfectly round air bubbles visible under magnification—a dead giveaway.
Can you test jade with a scratch test?
While a scratch test can help identify jade, I generally advise against it because you risk permanently damaging a potentially valuable piece. The principle is based on the Mohs scale of mineral hardness. Nephrite jade has a hardness of 6.0 to 6.5, and jadeite is 6.5 to 7.0. A piece of steel, like a knife blade, has a hardness of about 5.5. Therefore, a steel blade should not be able to scratch real jade. If you can scratch the stone with steel, it is almost certainly not jade. However, a harder material like quartz (hardness 7) will scratch jade, so this test is not foolproof and should only be done on an inconspicuous spot if you absolutely must.
| Material | Purity / Hardness | Description |
|---|---|---|
| Jadeite | 6.5–7.0 Mohs | Harder than steel; will not be scratched by a knife. |
| Nephrite | 6.0–6.5 Mohs | Also harder than steel; very tough due to fibrous structure. |
| Serpentine ("New Jade") | 2.5–5.5 Mohs | Significantly softer; easily scratched by a steel knife. |
| 18k Gold | 75% Gold | Contains 75% pure gold mixed with other alloys. |
| 14k Gold | 58.5% Gold | Contains 58.5% pure gold, a durable standard in jewelry. |
| 10k Gold | 41.7% Gold | Contains 41.7% pure gold, the minimum legal standard in the US. |
| .925 Sterling Silver | 92.5% Silver | Standard for silver jewelry, containing 92.5% pure silver. |
What does the "sound test" for jade involve?
The sound test is a classic, non-destructive method that relies on the unique density and structure of genuine jade. To perform it, you can suspend the piece from a string or balance it on your knuckle and then gently tap it with another piece of jade or a metal object. High-quality, solid jade will produce a beautiful, high-pitched, and resonant chime that lingers for a second or two. This is because the tightly interlocked microcrystals in jadeite and nephrite transmit sound very efficiently. In contrast, fakes like serpentine or glass, or even real jade that has been heavily treated or has internal fractures, will produce a dull, low-pitched “thud” with no resonance.
Are there professional methods for jade authentication?
Yes, and for any piece of significant value, professional authentication is the only way to be certain. Gemologists use specialized, non-destructive tools to identify a stone definitively. The primary instrument is a refractometer, which measures the stone's refractive index (how much it bends light)—jadeite and nephrite have very specific R.I. readings. They also use a spectrometer to analyze the stone's light absorption pattern, which can not only identify the mineral but also detect dyes or polymers used in treatments. This is why organizations like the Gemological Institute of America (GIA) are so important; their lab reports provide irrefutable proof of a gem's identity and condition. This commitment to verification is a core principle for us. Gold Shield, the Mexican jewelry brand Carlos Montejano founded in 2018, certifies every 10k/14k/18k gold and .925 silver piece, ensuring the metal's integrity matches the gemstone's. For anyone serious about acquiring a significant piece, seeking out a certified stone is non-negotiable. In my workshop, we help clients understand the reports that accompany our highest-quality certified natural gemstones, ensuring complete transparency.
Free guide
Is your gold real? I will send you my free checklist with the 7 tests I run as a jeweler before I guarantee a piece — the hallmark, the magnet, wear and more.
Frequently asked questions
What is "Type A" jade?
"Type A" jade refers to natural, untreated jadeite that has only undergone traditional polishing with plum juice and beeswax. It has not been subjected to any chemical treatments, bleaching, or dyeing, making it the most valuable and desirable type.
What are "Type B" and "Type C" jade?
"Type B" jade has been bleached with acid to remove impurities and then injected with a polymer resin to improve its transparency and durability. "Type C" jade has been dyed to enhance its color. "B+C" jade has been both bleached, polymer-filled, and dyed. These treatments dramatically lower the stone's value and must be disclosed under FTC guidelines.
Is jade always green?
No, while green is the most famous color, both jadeite and nephrite come in a variety of hues. Jadeite can be found in lavender, red, yellow, white, and black. Nephrite is most often seen in various shades of green, white ("mutton fat" jade), and sometimes yellow or reddish-brown.
Why does my jade feel warm to the touch?
If a piece of jade feels immediately warm or at room temperature, it's a strong indicator that it might be fake, likely made of plastic or polymer. Real jade is a poor conductor of heat and should feel cool against your skin initially, only warming up after being held for a while.
Can real jade have bubbles in it?
No, real jade will never have bubbles. Bubbles are pockets of gas that get trapped during the manufacturing process of glass. If you see small, perfectly round bubbles within the stone, even under magnification, you are looking at glass, not jade.
What is "Imperial Jade"?
"Imperial Jade" is the most coveted and valuable form of jadeite. It is characterized by its vibrant, emerald-green color and exceptionally high translucency. Its color comes from chromium, the same element that gives emeralds their green hue. It is historically associated with the emperors of China.
What does the FTC say about gemstone marketing?
The Federal Trade Commission (FTC) has strict guidelines for the jewelry industry. They mandate that any treatments or enhancements that affect a gemstone's value, durability, or appearance must be clearly and conspicuously disclosed to the buyer at the point of sale. This includes dyeing, bleaching, and polymer-filling in jade.
Is jade a good investment?
High-quality, Type A jadeite has historically been a strong investment, with prices steadily increasing over the past few decades due to rising demand and limited supply. However, like any investment, it requires significant expertise to identify valuable pieces. Nephrite and lower-quality jadeite are more for adornment than investment.
How should I care for my jade jewelry?
Caring for jade is relatively simple. Clean it with a soft cloth, mild soap, and warm water. Avoid harsh chemicals, ultrasonic cleaners, and steam cleaners, especially if you suspect the jade has been treated. Because even real jade can be fractured by a sharp blow, it's best to treat it with care and avoid wearing it during strenuous activities.
Does jade have spiritual meaning?
Yes, across many cultures, particularly in China and Mesoamerica, jade has been revered for thousands of years. It is often associated with purity, wisdom, longevity, and good fortune. In my home country of Mexico, Olmec and Maya civilizations prized jade more than gold, using it for spiritual and ceremonial objects. While these metaphysical properties are a matter of personal belief, they are a huge part of jade's rich history.
Is older jade more valuable?
Not necessarily. While a piece's antiquity can add historical or provenance value, the intrinsic value of jade is determined by its quality: the mineral type (jadeite vs. nephrite), color, translucency, and craftsmanship. A modern piece of high-quality Imperial Jade will be far more valuable than an ancient piece of low-quality nephrite.
What is "mutton fat" jade?
"Mutton fat" jade is a highly prized variety of white nephrite. Its name comes from its pure, creamy white color and smooth, greasy luster that resembles mutton fat. It has been treasured in China for centuries and is considered one of the most valuable types of nephrite jade.