If My Jadeite Bangle Changes Color, Does It Mean It Must Be Fake?
Generally speaking, jadeite is a relatively stable stone material. Natural jadeite usually does not change color easily. However, if a bangle has been dyed, filled with resin, or chemically treated, its color may fade or change over time. Therefore, if a jadeite bangle shows a noticeable color change, the first thing to consider is whether it may be fake or treated.
However, not every jadeite bangle that changes color is fake.
In general, it is rare for green jadeite to naturally become greener. Sometimes a bangle may appear greener because of lighting, surface gloss, skin oil, moisture, camera color temperature, or because an existing color root becomes more visually obvious. This does not necessarily mean that the green color has truly spread.
If a green color root does show a very slight natural spread, it would usually take a very long time. In daily life, the more commonly seen natural color change in jadeite is yellowing. Over a long period of time, some jadeite may even show reddish tones.
Example:
Another example:
Another example:
When this kind of change happens, one common reason is that the jadeite was newly mined, cut, or polished, and the bangle already contained a yellow color root or iron-bearing area.
It is often related to iron-bearing minerals inside the jadeite. When a jadeite boulder is buried deep underground or encased inside a raw stone rough, it is sealed away from oxygen. The moment it is mined, cut open, polished, and exposed to the atmosphere, that long-term air exposure kicks off the slow, natural oxidation process. Even sitting quietly in a storage box for a few years, the Fe, Fe2+ to Fe3+ transition keeps happening on its own. This may make yellow, brown, or reddish tones appear stronger.
However, this process depends on the mineral composition, internal structure, surface condition, humidity, and storage environment. It should not be used as the only way to judge whether a jadeite bangle is real or fake.
Jadeite with purple-yellow tones may gradually look more yellow over time. This can also be seen in real-life examples.
I remember hearing stories like this when I was young: when an elderly person passed away, the family buried her with a jade bangle. Years later, when the grave was reopened, they found that the jade bangle had turned yellowish red. People said that the person’s blood essence had entered the bangle and called it a “blood-thread jade.” It was said to be very valuable and even lifesaving.
However, this is not a scientific explanation. From a scientific point of view, this type of yellowish or reddish change is more likely related to the continued oxidation or visual deepening of iron-bearing areas already present inside the jadeite.
Therefore, if a jadeite bangle changes color, it does not automatically mean that it is fake. It should be judged together with its certificate, structure, photos, videos, surface condition, and, if needed, professional testing.