How to Tell if Jade Is Real: 5 Tests + Jadeite vs. Nephrite Explained

Carved translucent green jadeite jade pendant held to the light

By Charles Rose, founder of Glacier Art Objects

"Jade" refers to two different minerals: jadeite (rarer, harder, more valuable) and nephrite (the traditional Chinese jade). Real jade feels cool, smooth, and dense, stays cool to the touch, and produces a clear ringing tone when tapped. At-home tests can rule out obvious fakes, but only a gemological certificate confirms jade is genuine and untreated (Grade A).

Few materials carry the cultural weight of jade — carved in China for more than seven thousand years, and prized in modern markets at prices that rival the finest gemstones. For anyone entering this field, the first task is understanding what jade actually is.

Table of contents

Jadeite vs. nephrite: two minerals, one name

The word "jade" refers to two entirely different minerals. Both are authentic jade, but they differ in rarity, hardness, and value.

Nephrite is the historical Chinese jade — a calcium magnesium silicate, slightly softer, with a smooth waxy or oily luster. It comes in celadon green, white ("mutton-fat"), grey, yellow, russet, and black, and was the only jade used in China until the 18th century. Most ancient Chinese jades are nephrite.

Jadeite is a sodium aluminum silicate — harder, denser, and rarer, with a glassier luster. It's the source of "imperial jade," the vivid emerald green so prized today. Jadeite arrived in China from Burma (Myanmar) in the late 18th century and has dominated the high-end market ever since.

5 ways to tell if jade is real

These at-home tests can rule out obvious fakes, but none is foolproof — only a gemological lab gives certainty.

  1. Temperature test. Real jade feels cool, smooth, and soap-like, and stays cool for a while when held. Glass and plastic warm up quickly in the hand.
  2. Sound test. Gently tap two pieces together (or tap with a metal object). Real jade produces a clear, high-pitched, bell-like ring; fakes and treated jade give a duller sound.
  3. Light/structure test. Under a 10x loupe and bright light, genuine nephrite or jadeite shows a fibrous, granular, felt-like internal structure. Glass imitations may show air bubbles — real jade never does.
  4. Density and feel. Jade is dense and feels heavy for its size. A piece that feels light and flimsy is likely glass, resin, or plastic.
  5. Color test. Genuine jade shows natural variation and internal depth. Color that looks too uniform, too vivid, or "flat," or that pools in cracks, suggests dyeing or imitation.

A scratch test is sometimes suggested, but performing it improperly can damage genuine nephrite, which is softer than jadeite — so approach with caution.

How jadeite is graded

Jadeite is judged on the "three C's": color (the prized "imperial green" is a vivid, pure, slightly bluish green), clarity/transparency (top jadeite is highly translucent, glowing softly when backlit), and texture (fine, even, glassy, free of visible crystals or fractures). A piece combining all three at the highest level is genuinely rare and commands extraordinary prices.

Nephrite is judged differently — by color (pure white "mutton-fat" Hetian jade is most prestigious), but also carving quality, age, and provenance. For ancient Chinese jade, the carving itself is the art.

Grade A, B, and C: the treated jade problem

The modern jadeite market is plagued by treatment, classified into three grades:

  • Grade A: Natural, untreated jadeite. The only grade worth collecting at investment level.
  • Grade B: Bleached with acid, then impregnated with polymer resin. Invisible without testing. Worth a small fraction of Grade A.
  • Grade C: Dyed to enhance or alter color, often combined with B-treatment. Worth even less.

Treatment is undetectable by eye. "Imperial green jadeite" at a suspiciously low price is almost always Grade B or C. For any significant jadeite purchase, demand a recent gemological certificate from a recognized lab — GIA, HKJSL, or GIT are the most respected.

What drives jade value

For jadeite: type (Grade A only at collector level), color (imperial green is king), translucency, texture, and origin (Burmese is the standard). For nephrite: carving quality, age, provenance, color, and any inscriptions or marks that document its history. A masterfully carved Ming nephrite from a documented collection commands a price entirely independent of color grade.

Frequently asked questions

How can you tell if jade is real?

Real jade feels cool, smooth, and dense, stays cool to the touch, and produces a clear ringing tone when tapped. Under magnification it shows a fibrous internal structure with no air bubbles. At-home tests can rule out obvious fakes, but only a gemological certificate confirms jade is genuine and untreated.

What is the difference between jadeite and nephrite?

Both are real jade. Jadeite is harder, denser, rarer, and more valuable, and comes in a wider range of colors including prized imperial green. Nephrite is slightly softer but tougher, more common, and usually found in green, white (mutton-fat), or black. Most ancient Chinese carvings are nephrite.

What is the most valuable type of jade?

The most valuable jade is imperial green jadeite — a vivid, pure, slightly bluish-green, highly translucent stone with fine texture. Top examples have sold at auction for tens of millions of dollars. For nephrite, pure white "mutton-fat" Hetian jade is the most prestigious.

What does Grade A, B, and C jade mean?

Grade A is natural, untreated jadeite — the only grade worth collecting. Grade B is bleached and resin-impregnated. Grade C is dyed. B and C treatments are invisible to the eye and dramatically reduce value, so a gemological certificate is essential for any significant purchase.

Do I need a certificate to buy jade?

For any significant or expensive jade, yes. Treatment and dyeing are undetectable by eye, so a recent certificate from a recognized gemological lab confirming Grade A (natural, untreated) status is the only reliable proof. Inexpensive decorative pieces typically do not require certification.

Charles Rose is the founder of Glacier Art Objects and Sand and Rose LLC. Over more than a decade in the trade, he has handled and sold over 18,000 works of fine art, antiques, jade, sculpture, and collectible objects.

Browse our Jade collection. Each piece is identified by type (nephrite or jadeite), with condition notes and — for jadeite — gemological documentation where applicable.