Why does jade jewelry change color after wearing for a long time?

If your jade changes color after wearing it for a while, the first thing you should consider is whether you bought B-grade jade. Secondly, depending on the color changes of jadeite, such as turning yellow, red, green, etc., there are different reasons. Let’s take a look!

B+C goods change color

In fact, the most likely reason for jadeite to change color is that you bought fake jadeite. Many beautiful jades on the market today are actually not natural A-grade jades at all. Most of them are B-grade or C-grade jades that have been acid-washed. B-grade goods have been corroded by strong acids and alkalis, their internal structure has been destroyed and the texture has become loose. In order to cover up this phenomenon, they are often filled with organic or inorganic glue.

If you wear this kind of jade for a long time, the gum filling the inside of the jade will age, causing the color of the jade to become turbid and appear yellow, gray, or black. As for C-grade jadeite, it is artificially colored based on B-grade jadeite. After wearing for a long time, this kind of jadeite will not only turn black, but may even fade.

Although jade does not have the magical effect of "turning black due to absorbing toxins" as advertised by those unscrupulous merchants, natural jade has many benefits.

Turns red after wearing it for a long time

If it is confirmed to be an A-grade bracelet, it may still turn red. Many old people say that such a situation is a good sign because the jade is alive! If there are red blood streaks inside the jade, it is definitely good jade! This explanation is indeed in line with the saying "People raise jade, jade raises people".

However, strictly speaking, this change is mainly because the iron element in the jade will appear yellow when it is in an oxidizing environment for a long time, and the cobalt element in it will appear red when it is oxidized. Jade merchants call this phenomenon "living jade." The process of oxidation caused by long-term contact between jade and the human body is called "growth".

Another situation is that the jade itself has red color, and after coming into contact with the secretions of human skin and the complex influence of the outside world, the color becomes apparent over time.

Turns yellow after wearing for a long time

Jade is composed of a variety of minerals (jadeite, chrome pyroxene, nanochrome pyroxene, etc.). The finer the mineral particles, the denser the structure. We say that jade is not easy to mutate because of its relatively high density, excellent wear resistance and durability. On the contrary, low density has poor wear resistance and durability, and it is easy for the liquid adsorbent in the internal crystal gaps to evaporate, making it more likely to dry out and age, which is what we call a variant. This is easy to understand. Just like clothes, fluffy ones are definitely easy to get dirty, while fluffy ones are more resistant to getting dirty. The same is true for the density and sparseness of jade.

What people refer to as mutations now generally refers to the general term for jade that turns yellow, becomes dull, and deteriorates in appearance after being worn for a long time, causing the jade to lose value. But in fact, not all jade will have this phenomenon. Most of the pure natural and high-quality jade will not have this phenomenon. It is generally believed that young jade is more likely to mutate, as it has a loose structure and the liquid adsorbents between the crystal gaps are easy to evaporate, causing the "water head" to be lost and become "dry". On the other hand, old jade bracelets have a high density, full water head, strong wear resistance and good durability, and are generally not easy to mutate.

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