There are three reasons why jade bracelets are a little yellow: improper maintenance and yellowing due to "variation" and processing. Generally speaking, the first situation is more likely to happen. If jadeite is not cleaned for a long time, it will cause dirt accumulation on the surface and then change color.

Jade varieties, jade bracelets may be jade varieties if they turn yellow. Some jadeites are unstable and tender. After a period of time, there will be variation. Some will turn yellow, some will deepen, and some will evaporate and dry. Improper maintenance, yellow jade bracelet may be improper maintenance.

Yellowing due to "mutation" The common phenomena of jadeite varieties are: drying, yellowing, green aging, blackening and so on. However, jadeite jade, which is easy to mutate, has relatively low density and poor wear resistance, which is the so-called "tender species". If this bracelet is tender, it may turn yellow.

Some jadeites turn yellow after wearing for a period of time, indicating that jadeite bracelets are not high-quality jadeite after treatment. Usually jadeite will become greener and brighter when worn correctly. Only a few jadeites will not look good in color, but their luster will get worse.

If the yellow spot on the jade bracelet is dirty, it may be an impurity in the process of jade formation; It is usually considered as a defect, which will reduce the value of jade bracelets.

Usually, if there are yellow spots on the jade bracelet, it means there are defects. The yellow spots on the jade bracelet are caused by the black impurity elements secreted by jade during its growth, which affects the beauty of the jade bracelet to some extent.

Why are some jadeites yellow?

Emerald appears in various colors because it contains different dye ions: usually white, red, green and purple. Yellow, pink, etc. Pure and impurity-free, it is white, and if it contains chromium, it presents soft and gorgeous light green and dark green, which is called emerald. This variety is the most precious, and people cherish it very much.

The color of jadeite is caused by metal ions contained in jadeite. In the case of yellow jadeite, yellow is mainly iron oxide ions, which are physically colored.

The yellow color of jadeite is mainly formed by the bare surface and the infiltration of iron after mineralization.

How is the color of jadeite formed?

1, flying represents two colors, red and yellow. Both red and yellow are due to the fact that iron entered the jadeite during the formation process, which led to the appearance of red and yellow.

2. In fact, the color of jadeite is mainly caused by isomorphic substitution of trace elements such as chromium, titanium, iron and manganese. The higher the content, the darker the color, and the less the content, the lighter the color. Color-causing elements in jadeite are often unevenly distributed, so local colors may be thick or light, or thick or scattered.

3. The primary color is caused by chromogenic ions during the formation of jadeite. The secondary color is produced by the influence of foreign colored substances after jadeite diagenesis. The primary colors are: green: caused by isomorphic substitution of elements such as chromium, titanium and iron. Purple: colored by manganese. Black: caused by excessive chromium and iron. Secondary color: yellow: caused by limonite infection.

4. The color formation of jadeite is mainly divided into two categories, the first category is primary color, and the second category is secondary color. The primary color is the color formed by the primary minerals of jadeite, among which the formation of white jadeite and jadeite with chromium turning green, manganese turning purple, dark green, dark green and oil blue is related to omphacite or jadeite containing omphacite.