Because the color of jadeite is determined by its internal trace mineral elements, and these trace mineral elements are gradually absorbed by jadeite in the long-term geological process. At the time of jade mining, these internal trace mineral elements have been basically stable, and the external natural temperature will not have a great impact on coral jadeite, which will make coral jadeite discolor.

The color distribution of jadeite is also related to its environment. The air humidity in the south is relatively high, so the water loss of jadeite in the south is much slower than that in the north. It also has something to do with clothes. In the long-term wearing process, some oil secreted by human body will slowly attach to the surface of coral jade under the action of human body temperature. As time goes by, coral jade will become more moist and brighter, giving people the illusion that coral jade will change color.

Of course, if you find that your jade jewelry is seriously discolored, it may be dyed fake jade, and the dyed jade will last for a long time. Fading is inevitable. If this happens, it is recommended to send it to a professional jewelry appraisal institution for testing to ensure that your interests will not be harmed.

Extended data

According to GIG's research, jade can be divided into nephrite and jadeite.

Nephrite is a traditional jade material in China, and its name comes from nephrite. Because nephrite is the best in Hotan area of Xinjiang, people often call nephrite "Hotan jade". The hardness of nephrite is generally 5.6-6.5 degrees, and it is opaque or translucent. Nephrite is divided into the following categories by color: white jade, topaz, sapphire, (blue white jade), jasper, jet, flower jade and sugar jade.

Jadeite refers to jadeite produced in Myanmar.

The vast majority of jades produced in China are nephrite, and "sheep fat white jade" is a treasure in nephrite, with delicate texture and white color. Many exquisite jade works of art are carved from nephrite.

Jadeite is mainly produced in Myanmar and is even rarer than nephrite. Because jadeite is superior to nephrite in jade quality, color and price, jade ornaments on the market are mainly jadeite, and consumers have great demand.

The simplest method for jadeite identification:

1. In the sun, there are some cloud-like things in jade, like cotton wool.

2. Jade is very hard, like a diamond, so you can draw a series of marks on the glass.

3, jade is cold, put a hair on the jade, light it with a lighter, and keep it on the jade's head. (To be verified, in fact, when hair burns on glass or porcelain (silicate mixture), heat transfer will occur, and it will not burn until it reaches the ignition point. )

4, water identification method, drop a drop of water on jade, if it is dewy for a long time, it is real jade; The water droplets disappear quickly, which is a fake.

5, tongue licking method, the tip of the tongue licking real jade has a feeling of astringency; Fake jade has no astringency.

References:

Baidu encyclopedia-jade