If the surface of Hetian jade looks like a layer of oil, it looks bright and moist, indicating that this piece of Hetian jade is very good. The measurement of water head is generally described by size. "A little water" usually refers to how deep the light can shine on the jade.
When dividing water, the light transmission depth is 3 mm, and the second division, namely the light transmission depth, is 6 mm. Three-point water, that is, the light penetration depth is 9mm. Basic development: the size of jadeite is not equal to transparency. Among them, three-point water is the best, which means that the jade with a thickness of 9 mm is completely transparent.
Looking at the water content of jadeite, you can directly illuminate the interior of jadeite with a strong flashlight and observe its light transmittance to judge how much water content of jadeite is.
"One-water separation" means that minerals with a depth of 3 mm can be seen in jadeite under the condition of light, and so on. Among them, the water head of jadeite divided by three times is the best, the light penetration depth is about 9 mm, and the water divided by one time is the worst. There are few jadeites in the low-end jadeite market that can reach three points of water, and the jadeite head that can generally reach two points of water is already good.
When observing the jade head, the average connoisseur will use a spotlight flashlight for lighting observation to see the incident depth of light in the jade. Introduce the depth and you will know how much water there is.
A simple way to judge is to put a newspaper in the middle of the bracelet and read the words on it through the bracelet. Basically, it can be seen as a kind of glass, a kind of ice in a daze, and only black spots and waxy ice can be seen. At this time, you have to look at cotton and thickness.
What do you think of Jed?
Looking at the water content of jadeite, you can directly illuminate the interior of jadeite with a strong flashlight and observe its light transmittance to judge how much water content of jadeite is.
The measurement of water head is generally described by size. "A little water" usually refers to how deep the light can shine on the jade.
There is water separation, which means that the jadeite with a thickness of 3mm is translucent; Dichotomy refers to translucent jadeite with a thickness of 6mm. The jadeite with secondary water separation is transparent and bright, reaching the level of glass mill, and can be considered as a first-class product. The transparency of jadeite is generally estimated by the naked eye, and the jewelry industry is called a little water.
With the naked eye, we can basically see its internal characteristics, which is sub-transparent. 3 minutes of water: refers to the jade light penetration depth of 9 mm. Jade that can reach 3 minutes of water is rare. Looking at the past with the naked eye, the internal structure of jadeite is clearly visible and considered to be completely transparent.
How to distinguish the grade of planting water in jadeite?
1, jade seed water classification glass type: as transparent as jade glass, it will have obvious glass luster after polishing. The foundation is clean, without defects such as absorbent cotton, and the jade surface will glow with the naked eye.
2. Water classification of jadeite: glass jadeite, as transparent as glass and dense crystal particles, is the best and belongs to the most delicate and transparent variety of jadeite. On the whole, the ice jadeite is like water freezing, clear and refreshing, with cool beauty.
3. According to the grade of jadeite seed water, it can be divided into four categories: glass seed, ice seed, waxy seed and bean seed.
How much does it cost to buy ecological sand-based permeable bricks?
1, how much is the permeable brick per square meter? The most common permeable bricks are mainly made of ordinary cement macadam and cement. Is a very common permeable brick, the market price is generally 15 yuan per square meter. The color pattern simulation effect is good and the color is uniform.
2. Bian Xiao learned from the eco-permeable brick market that the price of an eco-permeable brick is around 1 yuan, ranging from 0.75 yuan to 68 yuan. Its price will also change according to the demand. If a large number of ecological permeable bricks are needed at one time, the price will be much cheaper.
3. The price of permeable brick with the specification of x 1 15x50 is 27 yuan; Cheng Yongyi 230x 1 15x60 permeable brick 3 1 yuan, 250x 125x50 permeable brick 30 yuan and so on. Different specifications of permeable bricks have different prices. The price is determined by pigments, specifications, sizes, materials and other factors.