Daiyu is one of the four famous jade in China. It is produced in Xiuyan County, Liaoning Province. It is mainly composed of serpentine. It is usually green and has good transparency. The hardness is 4.9-5.5. The density is 2.5-2.7g/cm2. Glass gloss or grease. Gloss, its output accounts for about 70% of the total jade production in the country. In 2000, the National Stone Selection Stone Awards topped the list. Daiyu is now the general craft name of serpentine jade in China. In a broad sense, it can be divided into two categories, one is old jade (also known as Huangbai old jade), the seed in old jade is called Hemo jade, belonging to tremolite jade, its texture is simple, dignified, pale yellowish white It is a precious jade. The other type is the serpentine ore of Xiuyan jasper (also known as wagou jade). Its texture is solid and warm, delicate and round, and it is mostly green to lake green. Among them, dark green and transparent sputum are treasures. .
Saitama is a collection of serpentine minerals (serpentine rock) composed of fine fibrous and leaf-like serpentine crystals. It is a very delicate and dense block. It is available in a variety of colors, but is common in white, light green and yellowish green. Its hardness is 2.5--4.5; specific gravity is about 2.5; grease luster or waxy luster; translucent to opaque, and very few are transparent, similar to plexiglass.
The Burmese jade, known as the "King of the Jade", is loved by many people who love jade and jade. In particular, the green color of the Burmese jade, in addition to its bright color, very eye-catching, it can be worn regardless of identity, status, age, gender. Therefore, it is in line with the Chinese's implicit, peaceful, gentle and intimate personality. The demand for society is rising, and the price has doubled or even multiplied, becoming a new trend in jewelry.
The difference between jade and jade:
(1) Structural features and gloss: The structure of serpentine jade is meticulous. Even under the microscope, the granular structure is not visible. There is generally no orange peel effect on the polished surface, which is equivalent to the emerald of the old pit glass texture. The jade of a quality is glass luster, and the serpentine jade is a sub-glass luster.
(2) Inclusion characteristics: White cloud-like agglomerates often characterized by serpentine jade, various metal minerals such as black chromite and sulfides with strong metallic luster.
(3) Relative density: The relative density of serpentine jade is much smaller than that of jade, and the handcuffs will feel lighter. Weighing or refilling with still water can be accurately distinguished.
(4) Hardness: The hardness of serpentine jade is low, and it can generally be instructed by knife. However, it should be noted that the hardness of serpentine jade produced by Yanyan can reach 5.5, which is larger than the hardness of the knife and larger than the hardness of the glass. It is possible to draw streaks on the glass.
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