How to identify raw jade: what jade looks like in the rough

Raw jade usually looks like an ordinary rock: a rounded boulder or river pebble in a weathered skin of brown, yellow, gray or black, with the green or white people expect showing only where that skin has been cut, worn through or broken. To identify it, read the stone from the outside in, from the skin to any window or broken face and then the material itself, and check its hardness and specific gravity, knowing that home checks can only raise or lower your suspicion and only professional gem testing can confirm it. Even the brightest color in jade stone jewelry usually began inside a rock that looked like this.

What does raw jade look like?

Raw jade looks like a heavy, rounded rock with a weathered skin, or, where it was quarried straight from a deposit, an irregular, often angular chunk. Jade is a dense mass of tiny interlocking crystals or fibers, and it comes in two kinds, jadeite and nephrite, so in the rough it rarely shows the flat-faced crystal shapes that make raw quartz or emerald easy to spot.

The skin is the first thing you see. On jadeite boulders it can be white, yellow, light to dark brown or black, and reddish orange where iron oxide has stained it, according to a study of Burmese jade in Gems & Gemology, GIA's journal. The skin forms over long exposure to weather and mineral-bearing water, as our guide to how jade forms and gets its skin explains. In the Burmese jadeite the study describes, river boulders tend to have a thin skin that gives a fair idea of the stone inside, while boulders found away from the river often carry a thick skin over a cloudy layer traders call wu (雾), mist.

What does jade in rock look like?

Jade in rock shows as a vein, band or lens-shaped patch of different color and texture running through the host rock, often serpentinite. A specimen like that, sometimes sold as jade ore, is jade only in that band, so every check in this guide applies to the jade itself and not to the rock around it. Material from a deposit like this is easier to judge than a boulder, the same study notes, because no thick skin hides it.

How do you see inside a raw jade boulder?

You see inside a raw jade boulder only where the skin has been opened: through a window, a broken corner or a saw cut. A window is a small patch ground and polished through the skin, and according to the Burmese jade study a boulder's value rises sharply when good color shows in its window and falls when poor color shows. Traders also press a small metal plate against the stone and shine a penlight from the far side, so the plate blocks the glare and any translucency and color show through, and on a stone with no window they wet the surface to bring the color up. Much jadeite rough is sawn in half and sold with both faces showing. Even then, knowing a stone is jade and knowing what is inside it are separate questions: a genuine jadeite boulder can still hold poor color, coarse texture or a web of cracks. Buying on that uncertainty is what the Chinese trade calls du shi (赌石), gambling on stone, and it is part of why jade costs so much.

When I look at a window at Hpakant, I check three things, in this order:

1. The shine on the window face. How the light reflects off the polished patch, together with the texture I can see in it, tells me how fine the crystals are and how clean and even the exposed material looks, though the polish and the light can change that impression.
2. The edges of the window. Cracks show up where the window meets the skin, and I follow them to see which way they run into the stone.
3. The color, last. What matters is how deep the color goes, because a window can show bright green that sits only near the surface.

Color comes last because texture and cracks decide what a boulder can become: a natural jade bangle needs one large block with no crack running through it, while cracked material may still give smaller pieces, such as a cabochon for a jade stone ring.

How is raw jade faked?

Raw jade is faked mostly at the window and the skin, the two places a buyer relies on. The Gems & Gemology study of Burmese jade describes four methods: staining the window green; breaking off a chip, dyeing it green and gluing it back; grinding away the skin, painting the surface green and growing a new skin by soaking the boulder in chemicals; and drilling out a core, filling the hole with green material and a reflector, and covering it over. In the cases the study describes, the fake skin was soft and came away easily, while a genuine skin comes off only by grinding.

Whole imitations turn up too. In 2020 Gems & Gemology reported a 30 kg stone submitted as jadeite rough that turned out to be serpentinized marble: its yellow weathered skin and grainy texture looked like jadeite, and scrubbing the window with alcohol took the green color off. Rough sold online as "raw jade" deserves the same caution, because a name with jade in it is not a material, and a window is a claim rather than proof.

What does raw jadeite look like?

Raw jadeite shows a granular texture on a cut or broken face: interlocking grains, fine in the best material and coarse enough to see in lower grades, which can throw tiny frost-like flashes where light catches a flat grain face. The skin over it varies by mine: the trade describes a typical skin for each of Hpakant's main pits, from white and salt-like to shiny black, though skins overlap and can't confirm a pit on their own, and our jadeite guide describes the skins of the six main Hpakant pits. Under the skin the color may be white, green, lavender, black or several colors in one block, and it is rarely even; green tends to run in streaks and patches, and a small area of strong color is often saved for a real jade pendant or a matched pair of real jade earrings. The grain can change within one block too, from fine at one end to coarse at the other.

What does raw nephrite look like?

Raw nephrite has a dense, fibrous structure, so a broken edge looks irregular and splintery rather than smooth, and a water-worn surface has a soft, oily shine. The Wyoming State Geological Survey describes the state's nephrite as translucent to opaque, with an irregular, splintery fracture and a dull broken surface unless other minerals such as mica are present. Most nephrite is green, though it runs from white to black. In Xinjiang, river pebbles of Hetian nephrite, called zi liao (籽料), often carry a colored skin the trade prizes, and our nephrite guide covers Hetian river pebbles and how their skins are faked.

In the rough, nephrite and jadeite can sometimes be told apart by how they break and by specific gravity: nephrite breaks in splinters, while jadeite shows grains on a broken face and has a higher specific gravity. A firm answer often takes a microscope, specific gravity, chemical analysis or X-ray diffraction, the Wyoming survey notes.

How do you identify a jade rock?

You identify a jade rock by putting several checks together, because no single check at home proves a rock is jade: some results make jade less likely, and none confirms it. Work through them in this order.

1. Look at a worn or broken surface. Jade shows a dense, fine texture and a greasy to glassy shine. A fresh break that sparkles in the sun and curves like the inside of a shell suggests quartzite, according to the Wyoming survey, and a pistachio-green rock that splits along flat planes is more likely epidote.
2. Shine a flashlight through a thin edge. Much jade lets some light through at an edge, which shows its translucency, how the color is spread and some features inside, though not reliably whether it is jadeite, nephrite or a lookalike. An opaque rock isn't ruled out, because a lot of jade is opaque too.
3. Try a steel knife on a clean, exposed patch of the stone itself, never the skin or the host rock, and only where a mark doesn't matter. Steel blades vary in hardness, so treat this as a rough clue: a blade that bites in easily and leaves a clear groove points away from jade; serpentine and marble often scratch this way. Rub the mark before you judge it, because a blade can leave a gray metal streak on a hard stone that looks like a scratch. A blade that slides off proves little, since quartzite, prehnite, vesuvianite and several other green rocks are as hard as jade. Never scratch-test finished jewelry.
4. Estimate specific gravity. Specific gravity compares a stone's weight with its volume, so weight alone tells you little; a piece small enough for a jewelry scale can be measured with the water and scale test: jadeite reads about 3.34 and nephrite about 2.95. Treat them as typical values, not pass marks, since a piece that is partly skin or host rock gives a mixed reading.

Which rocks are mistaken for raw jade?

The rocks most often mistaken for raw jade are serpentine, quartzite and green aventurine, prehnite, vesuvianite, grossular garnet, epidote and marble, all of which can be green, dense and smooth once water has worn them. Several are sold under jade names, such as "new jade" for serpentine, and our guide to stones sold under jade names covers those names.

No column is a pass mark on its own. A knife that bites in easily points to serpentine or marble, and a low reading on the scale points to quartzite, aventurine or most serpentine; prehnite weighs less than jadeite but can overlap nephrite. Vesuvianite, grossular and epidote resist the knife and weigh as much as jadeite or more, so a hard, heavy green rock still needs a lab before anyone calls it jadeite.

When should you send a rock to a lab?

Send a rock to a lab before you pay for it as jade, and whenever you need to know what it is rather than what it might be. Testing by a qualified gem or mineral lab is the only way to confirm what a stone is and to tell jadeite from nephrite with certainty, and our guide to how labs identify jade covers the instruments. Before sending a large rough stone, ask the lab whether it accepts pieces that size and whether it needs a sample.

Raw stones have a few quirks at the lab. A large boulder can be too heavy for the usual measurements: the researchers who examined the 30 kg imitation above couldn't use some standard methods, so they tested an exposed area of the surface instead, with infrared spectroscopy, a hardness test and an acid test. A report covers what was tested, whether the whole stone, an exposed area or a sample, and the lab can tell you which; it names the material and any treatment the lab detected, and it can't promise what lies deeper inside a boulder. A standard identification report doesn't state origin either. Origin is a separate service, which GIA offers for untreated jadeite jade from Myanmar or Guatemala.

Other questions about raw jade

Does raw jade sparkle?

Raw jade doesn't glitter the way aventurine does. A cut face of jadeite can show tiny frost-like flashes where light catches its crystal grains, but sparkle all over a rock from flakes of mica points to green aventurine, and sparkle on a fresh break points to quartzite.

What colors does raw jade come in?

Raw jade has two sets of colors: the skin, usually white, yellow, brown, black or reddish orange, and the jade inside, which can be green, white, lavender, black, yellow or several colors in one stone. Our guide to the colors jade comes in covers the inside colors one by one, but the color of the skin says little about any of them.

Is raw jade worth anything?

Raw jade is worth what the stone inside is worth: its color, translucency, texture and cracks set the value. Our jade price guide covers how quality sets the price of finished jade. A rock that turns out to be serpentine or quartzite is worth little as jade.

Where can you find raw jade?

Raw jade is found where jade-bearing rock has been lifted to the surface and broken up by erosion, so most of it is collected as boulders in old river deposits, pebbles in riverbeds and on beaches, and blocks cut from veins in the host rock. Most fine jadeite comes from boulders in an ancient river deposit around Hpakant in Myanmar, and nephrite mainly from British Columbia, Siberia and China, with US sources in central Wyoming and on the Big Sur coast of California. Our guide to where jade is found covers each source.

I'm Hong, founder of BMjade. I have bought jadeite rough at Hpakant since 2016 and had it cut in our Kunming workshop, so nearly every piece of jadeite I handle started as a dull, skin-covered boulder like the ones in this guide. We don't sell rough; we sell the finished jewelry cut from it. More about how we buy is on our About us page.

Sources

• Hughes, Richard W., Olivier Galibert, George Bosshart, Fred Ward, Thet Oo, Mark Smith, Tay Thye Sun and George E. Harlow. "Burmese Jade: The Inscrutable Gem." Gems & Gemology, Spring 2000.
• Huang Jing, Yan Shuyu, Chen Shuxiang and Cheng Youfa. "Marble Imitation of Jadeite Rough." Gems & Gemology, Summer 2020.
• Wyoming State Geological Survey. "Jade." Accessed October 2026.