time:2022-07-05 source:sznbone Views:
Bracelets are generally made of jade or metal. Jadeite, Hetian Jade, Agate, Nanyang Jade, Xiu Jade, Lantian Jade, Dongling Jade, Cat's Eye, Hibiscus Jade, Afghan Jade, White Jade, etc. are all materials for processing bracelets; metals such as gold, silver, alloy, etc.
Color: Jade connoisseurs take color very seriously. Color is not only an important criterion for evaluating the quality of jade, but also the main basis for classifying jade types.
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 intrusion of other objects. Usually there are two kinds of hardness:
(1) Relative hardness, or Mohs hardness, is a kind of scoring hardness.
(2) Absolute hardness, also known as indentation hardness. It is measured according to the weight that the mineral surface can bear. The Mohs hardness of She Taicui is between 6.9 and 7.2, and there are slight differences between different varieties. Generally speaking, the hardness of white jade is slightly higher than that of jade. In the jewelry industry, hardness is generally regarded as an important indicator for dividing gems and jade. The hardness of gemstones is generally above 7.3 degrees on the Mohs, and the hardness of jade is generally 4-7.2 degrees on the Mohs. She Taicui has high hardness, good polishability, easy preservation, and has a certain collection value.
Density: Density is the weight per unit volume of jade. She Taicui's body weight was 2.65-2.85 as determined by a small body weight sample. Different varieties are slightly different, white jade is 2.85, blue-white jade is 2.65, and jade is 2.75.
Transparency: Transparency is the degree to which jade allows visible light to pass through, which is mainly related to the strength of jade's absorption of light. Mineralogy is generally divided into four types: transparent, translucent, slightly transparent, and non-transparent. She Taicui belongs to microtransparent. Under the general aggressiveness, the light can be transmitted, but the image of the transmitted object cannot be seen clearly.
Luster: Luster is the ability of jade to reflect light. She Taicui luster belongs to vitreous luster. This kind of luster is neither strong nor weak, that is, there is no crystal inspiration of strong light, nor waxy texture of weak light, soft and delicate, and glossy can be seen.