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

It is estimated that the yellowing of jadeite is caused by the oxidation reaction between iron ions and air. Jade has been worn for a long time, and it is covered with a lot of dust, dirt, grease and other impurities. If it is not cleaned regularly, it will turn black and yellow. Improper maintenance, such as chemical pollution and high temperature exposure.

The yellowing of natural jadeite is mainly due to the presence of dyeing ions, especially iron oxide ions, which leads to yellowing. If it turns yellow when worn, it is generally caused by improper maintenance.

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.

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.

What is the formation process of jadeite?

Jadeite is an aggregate of countless fine-grained particles mainly jadeite crystallized under geological action, and finally jade-grade mineral crystals are formed through weathering. It belongs to jadeite, its Mohs hardness can reach about 5 ~ 0, and its colors are diverse, among which bright green is the top grade.

The process of jadeite original stone has experienced more than 60 million years of evolution, from petrified jade to jade color and then to jade skin.

The third view holds that granite veins and light gabbro veins were formed by metasomatism under the pressure of 12 ~ 14 kPa under the action of hot water solution with high sodium chemical potential.

There are many views on the formation of jadeite. One view is that jadeite is formed by the decomposition of primary albite into jadeite under regional metamorphic conditions.

The formation of jadeite is the product of desilication of residual granite slurry invaded by magma in ultrabasic rocks under high pressure. In the process of regional metamorphism, the primary albite is decomposed into jadeite and formed.

How do the common colors of jadeite come into being?

The third color is green, which has the highest economic value. Green jadeite is a mixture of important chromium elements. Interestingly, the jewels and jades with color produced by chromium elements in nature have high economic value.

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.

The formation of color is the result of mutual replacement of elements in jadeite in the long-term geological process. It plays a vital role in the quality of jadeite. White: Pure jadeite is white with single chemical composition, and it is pure sodium aluminosilicate.

The color of jadeite is actually due to the addition of hair color elements, which will make it present various beautiful colors.