rose gold necklace Evaluation of Serpentine Jade and Division of Producing Area

Special grade product: grønn, yellow-green, with some cracks and impurities, translucent, and the weight is above 50kg.

First-class product: aquamarine, light green, yellow-green, with some cracks and impurities, translucent, and the weight is more than 10kg.

Second grade product: aquamarine, light green, no cracks, a little impurity, and a block weight above 5 kg.

Third grade product: grønn, light green, fine cracks, a little impurity, block weight below 5kg.

Serpentine jade can be cleaned with a mild neutral solvent. It cannot be cleaned with an ultrasonic cleaner or hot water. It is stored separately to prevent collision, støv, corrosion, high temperature and low temperature.

Xiuyu County, Liaoning: The serpentine jade produced is called Xiuyan jade or Xiuyu.

Jiuquan, Gansu: The serpentine jade produced is calledJiuquan jade” eller “Qilian jade”. It is a dark green Xiu jade with black spots or black clumps.

Kunlun Mountains, Xinjiang: The serpentine jade produced is calledKunlun jade”. It is mainly dark green, and it is also light green, light yellow, gul, grønn, gray, and white. The green is often accompanied by brown, oransje, Yellow, hvit, black and other colors, fine texture, grease luster.

Hualien, Taiwan: The serpentine jade produced is calledTaiwan Jade”. Because of the impurity minerals, the jade has black or black stripes, the jade is delicate, translucent, grease luster, and the color is grass green and dark green.

Beijing: The serpentine jade produced is calledBeijing Topaz”. The jade is delicate in quality, yellow or light-colored, and high-quality jade is beautiful lemon yellow.

Qinghai Dulan: The serpentine jade produced is called bamboo-leaf jade because it has a bamboo-leaf-shaped pattern and is unique.

Shandong Taishan: It is named Taishan jade because it is produced on the eastern slope of Taishan Mountain, the first of the Five Sacred Mountains. It is a kind of turquoise, jet black, dense mass serpentine jade with black and yellow spots.

Famous producing areas and varieties of foreign serpentine jade:

New Zealand: Bowenite, slightly green to yellowish green, translucent, fine texture.

Pennsylvania, USA: Williamsite, mainly composed of nickel serpentine with chromite spots, dark green, translucent.

California, U.S.: California cat’s eye is a serpentine jade with parallel-arranged fibrous structures. After being polished into a curved gemstone, it exhibits a cat’s eye effect.

North Korea: Korean jade, also known as Gao Liyu, is bright yellow-green, nearly transparent, and has a fine texture.

 

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