Buy Hetian jade, these "new tricks" must be careful!
Hetian jade culture has a long history in China and is one of the representatives of ancient Chinese traditional culture. Nowadays, Hetian jade mining and transportation is no longer a problem. In the past ten years, Hetian jade market has developed very rapidly. People hope to buy a piece of Hetian jade. Wearing or collecting, due to the development of today's technology, Hetian jade's imitation and manual processing methods have become more mature, so many people can't tell the difference between true and false. For this reason, the Xinjiang Autonomous Region Quality Inspection Institute Jewelry Institute has recently found some samples of Hetian jade. Let's talk about how to distinguish the "bonding" Hetian jade.
“Beauty†is a type that is popular among Hetian Yuzhong. Many of the original stones with their pretty colors have been carefully designed and engraved by jade carvings. They often present a delicate jade that is difficult to copy. Now the market is pretty jade. There are roughly two categories, one is "jade", such as sugar white jade, ink jade and other jade with sugar color and ink color; the other is "skin color", which is the secondary color of jade surface, we Let me talk about the first beauty:
This is a partial picture of the sugar white jade. The jade carving artist designs the sugar color part as the character image. The sugar color and the white part correspond to each other. The transition is natural. It is a good pretty color sample. It is loved and looks at the next sample:
At the same time, it is also a partial picture of the pretty "sugar white jade". The white part is carved with a dragonfly, but there is a neat and straight dividing line between the sugar color and the white, and the other colors are faintly displayed at the dividing line. We will This sample is placed under UV fluorescent light for further testing:
The appearance of this sample under the UV lamp is shown in the figure. The white color is excited by the sugar and white boundary. According to experience, this is a kind of glue to bond the white and sugar parts into one whole. After engraving, it is used to sample natural sugar white jade.
Let's talk about the second type of pretty "leather" jade. Some jade will form some secondary colors after a long period of iron dyeing in nature. It is commonly called "skin color", and a piece of jade has beautiful "Leather color" will add a lot of points to jade, jade carving artists also like to express their own ideas with pretty colors, such as these two pictures:
The jade carving master carved the "skin color" part into a beast type, and partially magnified and observed that the "skin" and the jade were naturally transferred, and the transition was obvious. It was not produced by bonding, and then the following figure:
These four pictures reflect the problem of bonding through glue. It can be clearly seen from the picture that the splicing is neat and straight, the color does not have any slight transition, the bat wings can also see the adhesion of the glue, the white light under the ultraviolet light, etc. Phenomenon, indicating that the bat part is not the "skin" on the jade itself.
The pretty jade found this situation should pay more attention to observe a few eyes, is it not safe to be assured? Not necessarily, take a look at the two images below:
This is a sample with a chain. If it is a jade with a jade chain carved out of a piece of raw material, it is a time-consuming and laborious process for the jade carving master because of the complicated process. Look at the sample of the figure, the chain. The splicing traces are faintly visible at the subject and then observed by the UV lamp. The interface emits strong fluorescence, so this is the same as the pretty sample described above.
Through these pictures and text descriptions, you should have an understanding of such samples, according to the national standard "Jewelry and Jade Name" GB/T16552-2010: will be added after the name of the material "flat stone" or In front of it, add the word "splicing". Everyone recognizes such samples. Basically, it is to observe whether the color has a transition, whether the color boundary is neat and straight, and it is possible to observe the reaction under the ultraviolet fluorescent lamp, or send it directly. Quality inspection, our Xinjiang Autonomous Region Quality Inspection Institute Jewelry Institute will uphold the scientific and fair, accurate and efficient, customer-oriented service concept and dedication to every customer, I hope that everyone who likes Hetian jade can have the satisfaction. Hetian jade jade.
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