Primary colors are 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.
"Fei" with high quality and positive color is extremely rare, and it is also the top grade in jadeite. Purple: At present, the cause of emerald purple is still inconclusive. It is generally believed that Mn replacing Al in jadeite will lead to purple. Black: jet, also known as Cui Mo in the market. Cui Mo is not actually black, but it is mostly dark green.
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.
Oxidation secondary color The main component of oxidation secondary color is Fe3+ oxide, which forms reddish-brown emerald, also called Hong Fei. It is caused by the compound containing high valence iron filling in the cracks and particle gaps of jadeite.
In fact, the color of jadeite depends on the elements that make up the mineral and what type it belongs to. And it will show different colors with different element contents, commonly known as primary colors.