Mocui and Moyu are both jade, but they are two completely different categories. Here are some of their differences:
Species: Mocui is a type of jadeite, which belongs to jadeite; Black jade belongs to a variety of Hetian jade, which belongs to nephrite.
Main ingredients: The main ingredient of Mocui is omphacite, which contains small amounts of tremolite and jadeite; The main component of black jade is tremolite, as well as a certain amount of graphite and other substances.
Color: The black of the ink jade will reveal the green, and the black of the black jade is very pure.
Light transmittance: The light transmittance of Mocui is relatively good, and the light transmission of Mocui will appear green when used to illuminate it, while the light transmittance of Mocui is weak, and some are even opaque.
Hardness: The hardness of Mocui is high, and scratching with hard objects will not leave traces, while the hardness of Moyu is lower.
In general, there are differences between ink and jade in terms of properties, composition, color, light transmittance, and hardness.
There are many ways to identify emerald and jade, the simplest and most direct of which is to irradiate it with transmitted light and determine according to their characteristics. Here's how to identify them:
Under Transmitted Light: Mocui appears green under transmitted light, while Moyu (except for the black Xiuyu) shows a lighter shade of black. Black Xiuyu also shows green under transmitted light, but the hardness of Mocui is greater than that of black Xiuyu, and the luster of Mocui is stronger than that of black Xiuyu.
On the reflective surface: the unique jadeite of jadeite can be seen, while the jadeite of other ink jade cannot be seen.
Luster: The hardness of black jade is relatively low, so the polished black jade shows a waxy luster; The hardness of Mocui is relatively high, and after polishing and carving, the surface has a glass luster.
Transparency: Compared with the brightness of Mocui, the color of Moyu is darker, and the transparency is a little worse.
It is important to note that the identification of ink and jade requires professional knowledge and experience, and if you are unsure, it is recommended to consult a professional jewelry appraiser. Or click on my avatar to consult.