The difference between Dushan jade and jade (Is Dushan jade Hetian jade)

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List of contents for this article:

• 1、How to distinguish Dushan jade from jade
• 2、The difference between jade and Dushan jade
• 3、How to distinguish Dushan jade from jade_How to distinguish Dushan jade from jade

How to distinguish Dushan jade from jade

Dushan jade with different origins is mainly produced in Nanyang, Henan Province, and its current main circulation area is also the place of origin.

The main differences between Dushan jade and jadeite are reflected in mineral composition, color characteristics, luster and polishing, physical properties and identification characteristics. The details are as follows: Mineral composition and origin Dushan jade: Altered plagioclase occurs in pyroxite rock mass. The main minerals are plagioclase (20%-40%) and zoise (50%-70%), and the secondary minerals include pyroxene, chromite, chromite, etc.

The difference between Dushan jade and jade is mainly reflected in five aspects: color, structure, density, luster and value. The details are as follows: Color Charles filter reaction: Dushan jade will appear red under the Charles filter, while jade has no color change. Green characteristics: There are few black spots in green jade and appear emerald green under strong light; due to its high dark mineral content, Dushan jade still has black spots under strong light.

Through microscope observation, Dushan jade can be seen with a regular granular structure, while jadeite shows an interwoven fiber or granular fiber structure. The physical properties are clearly distinguished: Dushan jade has a density of 73-18g/cm, and has a light feel; a refractive index of 52-56, and a soft oily luster. The density of jadeite reaches about 32g/cm, which is more solid when weighed; the refractive index is about 66, showing a bright glass luster.

The main differences between Dushan jade and jade are reflected in the aspects of origin, physical properties, structural characteristics, luster tone and value. The details are as follows: Origin and History Dushan jade is named after it was produced in Dushan, a suburb of Nanyang, Henan, China. It has a long history of application. Similar products have been found in the tomb of Fu Hao in Yin Ruins, and it is also recorded in the "Shuijing Notes" of the Northern Wei Dynasty. It is still one of the main jade carving raw materials in China.

The difference between jade and Dushan jade

The main differences between Dushan jade and jadeite are reflected in mineral composition, color characteristics, luster and polishing, physical properties and identification characteristics. The details are as follows: Mineral composition and origin Dushan jade: Altered plagioclase occurs in pyroxite rock mass. The main minerals are plagioclase (20%-40%) and zoise (50%-70%), and the secondary minerals include pyroxene, chromite, chromite, etc. Its chemical composition and physical properties vary greatly due to the type and content of minerals.

The differences between jadeite and Dushan jade are mainly reflected in the following aspects: Weight difference: The density of Dushan jade ranges from 73 to 18, which is relatively light and has a relatively light feel. The density of jade is 32, which is heavier than Dushan jade and feels heavier. Different structure: The main component of Dushan jade is plagioclase minerals, and the structure is sugar granular.

Jade: It has a glass luster, good transparency, and sufficient "water head". Experts can distinguish the difference from Dushan jade at a glance. Black spots Dushan Jade: Black spots (dark minerals) are common in the green color veins, which still appear black even under strong light. The color distribution of dark green Dushan jade with mottled spots is different from that of jade. Jade: Black spots in green are usually rare and appear emerald green under strong light.

Jadeite belongs to the pyroxene mineral, mainly jadeite. The structure is a typical intertwined structure, with different grain sizes and embedded with each other. Through microscope observation, Dushan jade can be seen with a regular granular structure, while jadeite shows an interwoven fiber or granular fiber structure. The physical properties are clearly distinguished: Dushan jade has a density of 73-18g/cm, and has a light feel; a refractive index of 52-56, and a soft oily luster.

The differences between Dushan jade and jade are mainly reflected in color, luster, polishing quality and specific test response. Color: The emerald color of Dushan jade often has a gray-blue-green tone. The color is not bright and pure enough. It is quite different from the dense, sunny, beautiful, upright and harmonious green of jade. Repeated observation and comparison will reveal that the green color of jade is more elegant and never tired of seeing it, while Dushan jade may appear dimmer.

The difference between Dushan jade and jade is mainly reflected in three aspects: hardness, specific gravity and luster: Hardness jade: Jade is a kind of jadeite with high hardness. Using sharp knives to carve the surface of jade generally will not leave traces. This is because the internal structure of jadeite is hard and stable and can resist the carving of external forces. Dushan jade: Dushan jade belongs to a type of nephrite and has relatively low hardness.

How to distinguish Dushan jade from jade_How to distinguish Dushan jade from jade

1. Dushan jade and jade can be distinguished by color, luster, black spot expression, polished surface characteristics, Charles filter reaction, refractive index and relative density. The details are as follows: Color characteristics Dushan jade: high-quality emerald Dushan jade is similar to Myanmar jade, but the emerald color of Dushan jade always has a gray-blue-green tone, and the color is not correct, lacking the dense, Yang, beautiful, upright and harmonious characteristics of jade green.

2. The main differences between Dushan jade and jade are reflected in the aspects of origin, physical properties, structural characteristics, luster tone and value. The details are as follows: Origin and History Dushan jade is named after it was produced in Dushan, a suburb of Nanyang, Henan, China. It has a long history of application. Similar products have been found in the tomb of Fuhao in the Yin Ruins. It is also recorded in the "Shuijing Notes" of the Northern Wei Dynasty. It is still one of the main jade carving raw materials in China.

3. The main differences between jadeite and Dushan jade are color characteristics, emerald performance, specific gravity differences and color shape characteristics. They can be identified by observing color purity, looking for emerald structure, weighing weight and analyzing color shape distribution. The specific identification methods are as follows: Color characteristics Jade: The color is pure, mainly rich and bright green. The green is evenly distributed and has a natural transition, and there is very little variegated color.

4. Jade is mainly bright emerald green, with varying shades and uneven distribution. It has a unique "emerald"(reflecting light from fibrous or needle-like structures) and presents a strong glass luster after polishing. The green direction of Dushan jade is obvious, while the green distribution of jade is more natural and flexible.