Jade’s “water” is also called “water head”, which refers to the size of light in the transmission range of jadeite. In general, it refers to the degree of wateriness of jadeite, which is a combination of transparency and species and foundation. Green watery, green and sturdy, elastic, like a marginless. Colorless and watery, it is as clear as a stream.
The transparency of jadeite jade depends on the structure of the inner crystal. If the crystal inside the jadeite is fine and uniform in size, such a structure allows the light to pass through smoothly, so that a good transparency is formed, and it can be said that “the head is good.” However, if the crystal is thicker and the size is not uniform, the light is hard to pass through, and the jade water is poor.
How do you look at the jade head?
Lightning with a flashlight is the most direct way to see the depth of light entering the jade. When the light enters, we will say: “The light is long and the head is good.” The light goes in: “The light is short and the head is poor.”
But the light can’t be too strong, otherwise it will be easy to judge the mistakes and look at the “head” too long.
What factors will affect the water head of the emerald
1. The structure of minerals
Jadeite is a mineral aggregate with a composition of jadeite minerals. The length of the water head is determined by the type, structure and thickness of the jadeite.
The more uniform the mineral composition of the jadeite, the finer the particles, and the less obvious the boundary between the particles (the so-called “species”), the better the transparency and the better the head. Therefore, “species” and “water” are in fact complementary, and people who know how to do it are generally referred to as “planting water.”
2. The depth of the color
If the color of the jade is too deep, it will also lead to a decrease in transparency. For example, full of green jade, full color will make the head slightly affected, but it does not affect the value.
3. The thickness of jade material
Transparency is related to the thickness of the jade itself. As the thickness increases, the more difficult it is to pass through the jade, the more the jade absorbs the light, so visually, the transparency is reduced.
The naked eye does not look transparent at all, but it is quite enough to look at the water. At the time of jade processing, some jadeite with a good head is opaque because it is too thick, and we call it trapped.