Jewelry concept

The concept of gemstones : gemstones are mineral single crystals or parts of nature that are formed by geological processes, giving rare, extremely rare, magnificent, hard and durable, and can be used to make beautiful jewelry and handicrafts. Most of them are crystalline elemental elements (such as diamonds - diamonds) or compounds (such as corundum - red, sapphire, etc.).

The concept of organic gemstones: from organic materials, derived from animals, plants, and organisms. For example: pearls (from shells), corals (from coral reefs), amber (fossils from resin), coal jade (fossils from wood), ivory (also modern and mammoth), 砗磲 ( Fossils from conch, tortoise shell (from the shell of the turtle), fossils of animals, etc.

The concept of jade : jade refers to the general term for transparent or opaque minerals or rocks formed by geological processes in the natural world, with fine geological, clean and lustrous, tough and wear-resistant, resulting in dense blocks. After the jade is honed, it shows that the polished surface is delicate, soft, clean, solid and oily, and different from the gemstones, it is gorgeous and gorgeous. Such as nephrite, unique jade, plum jade and so on.

Jade and its products are used to beautify and decorate people's spiritual and cultural life. Therefore, jade must have the characteristics of beauty, durability and scarcity.

(1) Texture This is the most important criterion for evaluating the quality of jade. Including crystallization, cleavage, cracks, impurities and so on. The texture of jade is required to be delicate, dense, soft and moist. The fine texture means that the mineral particles are less than 0.05mm. If the unique jade is even less than 0.01mm, if the minerals are visible to the naked eye, the texture will be rough, and it can only be low-grade jade.

(2) Color is an important criterion for evaluating the quality of jade. The color or color tone is required to be positive, and the pure color is soft and bright after glazing, especially pay attention to whether there is a "clear color". The color should be novel and colorful, bright and not dim after glazing. For example, jade, in the narrow sense refers to green, the best is emerald green, or both red and green and purple, the market is called "Fu Lu Shou" is very expensive, if it is white without green, the value is much lower. . Another example is nephrite, the highest grade is sheep fat white jade, the value is extremely high.

(3) The block size is generally calculated in kilograms. Special precious varieties, such as the “gem green” in jadeite, are of high quality gemstones and can also be calculated in grams or carats. Since jade is mainly used as a handicraft, the larger the block size, the better. The good jade generally needs more than 0.5kg, and the low-grade jade requires more than 2kg. The extremely precious block can be made as long as it can be made.

(4) Transparency Generally speaking, the requirements for transparency of jade are low, and many jade are translucent or opaque. Such as the unique jade is translucent to micro-transparent, and even opaque. But relatively speaking, the higher the transparency of jade, the higher the value. If you can see if a piece of jade material can be used, in addition to the above principles, it is also necessary to consider whether the gloss is bright, whether it has porcelain or not, whether the hardness is greater than 4, whether there are special structural structures, ribbons and patterns. Fine texture is the most important evaluation principle. The ancient Chinese people judged jade as "the first virtue and the second character", and the morality refers to the texture, and the symbol refers to the color.

The above jade is a natural product. Due to the low quality of natural jade, the price is expensive at night, prompting people to produce artifacts using modern technology and craftsmanship. If the natural crystal is rare and the price is high, the physical and chemical properties of the synthetic product are the same as those of the natural product, and the quality is superior to the natural product. However, due to mass production, the price is only 1% or less of natural products. This makes understanding natural jade and artificial jade a very important job.

For more jewellery knowledge, please pay more attention to China Jewelry Merchants Network.

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