Shanghai Tianmai Jewelry Shows Old Pit Kinds of Jade to teach you how to identify

The old pit is jade, the jadeite is commonly known as the "old pit glass", usually with glass luster, its texture is delicate and pure, the color is pure, bright, rich and even emerald green: the old pit is jade with fiber intertwined crystal The structure is mainly composed, and the hard main grain is very fine; the old pit type jadeite is translucent or transparent under light irradiation, and is the top or the best in jadeite.

Of course, even the well-balanced old pits have relatively high quality, some have higher transparency, some have less transparency, so the value is different, but in any case it is more attractive jade varieties, often used to make high-end For jewelry.

The typical new pit jade, also known as the "half-mountain water" wool, retains the apparent fracture characteristics of the original ore, the texture is not very delicate, and the water head is short. Because of its low hardness and loose texture, it is easier to engrave, but the polished finish is relatively weak.

Compared with the old pit jade, the new pit jade is indeed slightly thicker in texture. The surface gloss of the new pit jade is also glass luster, but the luster is not as sharp and rigid as the old jade, and the new pit is jade. The performance of the surface gloss is closely related to the internal structure of the jadeite in the new pit. The combination of crystal particles inside the jadeite of the new pit is not very tight, and the gap between the mineral crystal particles and the particles is not tightly bonded, so the new pit is jade carving. During the polishing process, the intergranular space inside the jade is easy to leave dents. The surface of the jadeite is not so smooth and flat, and its surface gloss is less sharp and rigid. The internal structure of the old pit jade is dense, and the composition of the mineral crystal particles is very tightly combined.

Shanghai Tianmai Jewelry Co., Ltd. believes that Laokeng and Xinkeng are concepts of geography and the distribution of geology and minerals, while new pits and old pits are the concept of jade quality. As long as it is high-quality, high-transparency, crystallized and delicate jade, it is the old pit kind of jade. The old pit jade is also the most worthy of attention of collectors.

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