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First, the meaning of the emerald base
The original color carrier is the bottom, which is well understood, but for the understanding of the jadeite bottom, we can not ignore two points: First, the evaluation of the value of jadeite is focused on the evaluation of Cui (green); second, right The understanding of the emerald base must fully consider the long-standing business habits and folk valley language. For jadeite, the green carrier is the sum of all the substances except the green bottom. The bottom is the characteristic of the light green base part except green, which is a comprehensive expression of jade texture (species), transparency (water), gloss, clarity and light tone.
The bottom is an intuitive impression of the appearance and interior of the jade jewelry. It is also a comprehensive indicator of the quality of jadeite. It is more of an ornamental, aesthetically comprehensive indicator, so it is good or bad. Evaluation is not quantifiable. Whether the jade is colored or colorless, there is no green or no green, the bottom is objective, that is, the carrier exists objectively. However, when there is no green, no color block, color pattern, or stain, in the quality evaluation, the effect of the bottom on the aesthetic effect of the jade jewelry can be ignored.
When observing and explaining the bottom, there are three points worthy of our attention:
1. Other colors than Cui (green) - background color.
2. When jade is colorless, the bottom is a comprehensive expression of species, water, luster and clarity.
3. When the jade is full of green or full color (orange, yellow, black, etc.), the color blends with the base, and the bottom is the comprehensive expression of species, water, color, luster and clarity.
Second, the evaluation of the emerald base
From the meaning of the bottom of the emerald, we can see that the connotation of the bottom contains two key elements and three general factors. The two key elements are texture (species) and transparency (water). The three general factors are luster, basic color and jade. Clarity. Therefore, to evaluate the quality and quality of a jadeite finished product or semi-finished product, the following should focus on the following points:
1. The effect of emerald and seed and water. This effect includes the effect of one complement or no complement or even mutual restraint between the three, and the luster characteristics of the appearance of the jade piece.
2. The part other than Cui and Cui, that is, the degree of coordination with the entire base.
3, clarity emerald. The less crack lock JADE, the white cotton, black spot, gray silk, nuggets and other defects, the substrate may be possible.
Based on the above three evaluation principles can be seen, the bottom with solid texture, compact structure, high transparency, gloss soft, main colors (Green) and the substrate, and in harmony with the jewelry at the beginning of the whole person as well. Jade bottom clean delicate materials after processing, its surface is very smooth, moist transparent in the light irradiation, shine. Can fully reflect the charm and aura, emerald sector business people JADE's call this phenomenon treasure air feet; kind of old, good color, water thoroughly, less defects, you can very well bring out the noble jade jewelry, Brilliant and value, giving people the feeling of greening, quiet, or like a fire, the jade business called this kind of bottom, this kind of feeling is eye-catching. The pros and cons of the bottom are directly related to the processing quality and ornamental effect of jade jade, which affects the quality grade and commercial value of jade jade pieces. Correct understanding and evaluation of the bottom of jade jewelry has a meaning that cannot be ignored.
Because the bottom of jadeite is a comprehensive reflection of various indicators, it can only be qualitatively evaluated in quality evaluation. It can only be used as a reference indicator in the indicators of jade quality classification.
Third, the difference between the bottom and the species, water and relationship
In reality, even in some books, the species and the bottom are two concepts that are often confused. In Yunnan Province, local standards recently promulgated "jade jewelry grade", the name for the kind of professional texture. From the point of view of jewellery, species refers to the structure and structure of jadeite. Its connotation is the size of the crystal size of jadeite minerals, the thickness and density of jadeite fiber structure: the bottom is the organic combination of species, water and color. Observing and identifying the species of jadeite, focusing on the concrete, concrete and microscopic geometrical indicators of jadeite; understanding the bottom of jadeite emphasizes the overall, macroscopic and external feelings of the comprehensive formation of indicators. Obviously, the bottom and the species are both connected and different.
In some materials, it is not appropriate to confuse transparency (water) with the bottom. Of course, among the names of many emerald bases, some are named after transparent features and transparency, but the connotation of the bottom is far more than a transparency indicator. Bottom and water are not a concept. This is also a problem that is easy to say clearly.
The difference is the bottom difference. For example, if the structure is rough, the iron dragon is jade, the base is not good, but the bottom is not necessarily good, such as porcelain jade, some structures are dense and delicate, but the porcelain jade belongs to the middle. Low-grade jade. Only when the species and water are good, can there be a good foundation; only the purity of the species, water, color and jadeite will be good, and a good foundation will emerge. This is a summary of the jade that we have been operating for many years. As for why there is such a phenomenon, there are many mineralogy, physics, gemology and art appreciation, and we are constantly exploring.
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