This post is mainly based on high ancient turquoise, and the age begins with the Neolithic period, which is also known as the cultural period. From the cultural period to the Warring States period, Songshi, as one of the main decorations of the ancients, lasted for two thousand years. The changes in the shape of different processes in different periods are briefly introduced here.
How to identify high ancient turquoise
The most obvious feature of the turquoise in the cultural period
One: the hole is thick, mostly horseshoe eyes, for punching, the opening is relatively large, the middle is small, most of the threads are obvious. The punching method is consistent with the drilling method of the jade at the same time;
Second: the white mud on the surface of the turquoise is more obvious. This feature is because the turquoise is buried under the soil for more than a thousand years. The longer the age, the thicker the white pulp on the surface of the turquoise.
The phenomenon of white general slurry is from the inside out, roughly the same as the jade. The white mud on the surface of the unearthed turquoise is more obvious, and the green will slowly float out for a while. But if you don't continue the disk, the white pulp will spread out, but as long as the turquoise is green, the plate will be revitalized, and the white pulp will slowly disappear.
This is one of the most effective ways to identify high ancient turquoise. On the contrary, the white color of the surface of the imitation stone is only the dyed surface, and there is no white general phenomenon. This white general phenomenon mostly occurs in the cultural period of the turquoise, and the phenomenon of the turquoise after the Western Zhou Dynasty is less, which is related to the material and the age of the soil layer;
Third: the shape of common Lezi, pipes, urns, pendants and so on. Most of the shapes are irregular, the surface is rough, and most of the wire is heavier.
The stone-making process in the Western Zhou Dynasty was relatively mature, and the shape was relatively regular and the shape was diverse. The surface of the turquoise is polished and polished, and the punching method is consistent with the punching method of Sima. However, the phenomenon of water and water in the tunnel is not obvious by agate, which is because the turquoise does not have a high hardness.
The Spring and Autumn and Warring States Turquoise production process is mature and regular. Common flat beads, small beads, millet beads, etc. Finely made, it can make millet beads as small as 1 mm and can make tiny holes of 0.5 mm. During this period, the tunnels are also right, but they are small and the ceramics with high hardness will be bright. Porcelain pine was common during the Spring and Autumn Period and the Warring States Period, which may be related to the trade in West Asia at the time.
The most important way to distinguish the turquoise in the Western Zhou Dynasty, the Spring and Autumn Period and the Warring States Period is to look at the pores and surface gloss.
The first look at the hole: the hole is punched, most of the holes are twisted, and the thickness of the screw is different. Some hole screw patterns are not very obvious, which is related to the turquoise material. Most of the hardness of the porcelain pine is obvious and the water is bright, and the hardness of the pine hole is not necessarily bright. Pay more attention to the aging marks of the turquoise surface and the traces of the tunnel.
Second look gloss: The luster of high ancient turquoise is soft and moist. On the contrary, the surface appears to be floating or matt. This kind of feeling requires individual contact with the physical experience to realize.
In short, the new and old turquoise still have to look at it comprehensively, and now the degree of simulation of the turquoise is very high. My personal experience is most important: look at white pulp, look at colors, look at holes, see signs of aging and natural patina.
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