2. Color: Jade experts attach great importance to color. Color is not only an important criterion for evaluating the quality of jade, but also the main basis for classifying jade types. The color of She Taicui is not the best among all kinds of jade, but its unique rich color is also cherished.
Compared with jadeite in other areas at home and abroad, she Taicui has more colors and forms her own series. She Taicui has three basic colors: white, cyan and emerald, and some transitional colors, such as bluish white, grayish white, bean green and dark green. According to industry legend, the white jade in She Taicui is not as good as that in other places. Jade is extremely precious middle and high grade jade.
3. Hardness: Hardness is one of the important signs to identify She Taicui. The hardness of minerals is a mechanical property of minerals to resist the invasion of other objects. There are usually two kinds of hardness:
(1) relative hardness, or Mohs hardness, is a kind of scratch hardness.
(2) Absolute hardness, also called indentation hardness. According to the weight that the mineral surface can bear. The Mohs hardness of Shetaicui is between 6.9 and 7.2, and there are slight differences among different varieties. Generally speaking, the hardness of white jade is slightly greater than that of jadeite. In the jewelry industry, hardness is generally regarded as an important symbol to distinguish gems from jade.
The hardness of gemstones is generally above 7.3 degrees Mohs, and that of jade is generally between 4 and 7.2 degrees Mohs. She Taicui has high hardness, good grindability and easy preservation, and has certain collection value. .
4. Density: Density is the weight of jadeite per unit volume. She Taicui's weight measured with a small weight sample is 2.65 ~ 2.85. Different varieties are slightly different, white jade 2.85, blue white jade 2.65 and jadeite 2.75.
5. Transparency: Transparency is the degree to which jade allows visible light to pass, which is mainly related to the absorption of light by jade. Mineralogy can generally be divided into four types: transparent, translucent, micro-transparent body and opaque. She Taicui belongs to micro-transparent body, which can transmit light under the general enterprising degree, but can't see the transparent objects clearly.
6. Gloss: Gloss is the ability of jade to reflect light. Her brittle luster belongs to glass luster. This luster is neither strong nor light, that is, there is no crystal inspiration of strong light, nor wax texture of weak light, and it is soft, delicate and shiny.
Extended data
She's so lame:
Serpentine is a natural mineral, and mineral is a characteristic component of traditional Chinese medicine. It has been studied for a long time, and gems account for a large part. China's ancient medical classics, Huangdi Neijing, Tang Materia Medica, Shennong Materia Medica and Compendium of Materia Medica, all say that jade can soothe the nerves, dredge blood vessels, moisten the heart and lungs, clear the eyes and ears, soften tendons and strengthen bones.
According to modern scientific determination, serpentine itself contains many trace elements, such as zinc, iron, copper, manganese, magnesium, cobalt, selenium, chromium, titanium, lithium, calcium, potassium and sodium. Its curative effect has always been the best in surgery. It was once a sharp weapon for China ancestors to prevent and treat diseases, and it was also used as the main medicine for health preservation, aging prevention and alchemy for a long time. Geng, now used for tumor treatment, shows unusual effect.
From the pharmaceutical point of view, wearing natural minerals for a long time can supplement the elements and trace elements that the human body lacks, absorb or excrete the redundant elements and trace elements, and keep the human body unique and positive. It is found that the snake fetus has the effect of calming the nerves.
Baidu Encyclopedia-She Taicui