T/XYZL 02-2020 Active Group standards

T/XYZL 02-2020 South Yue (Xinliang Yue) grading

Publish Date: 2020-08-01 Implement Date: 2020-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/XYZL 02-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Animal and poultry products

ICS Name: Jewelry

Publish Date: 2020-08-01

Implement Date: 2020-09-01

Scope

Main Technical Content: 1.1 Xinyi Nan Yu Xinyi Nan Yu, also known as Nan Yu, Southern Jade, or Xinyi Jade, refers to jade materials produced in Xinyi City, Guangdong Province and its surrounding areas. It is mainly composed of serpentine, with talc, tremolite, chlorite, gold mica, olivine, and carbonate minerals as secondary components. It has practical value and is typically greenish-blue, yellow-green, blue-green, or black-green in color, with a greasy luster to waxy luster, and a translucent to slightly transparent texture. It is a serpentine-based jade with a distinctive metamorphic structure characterized by inclusions of serpentine and other minerals. 1.2 Main Part The main part refers to the portion of the jade material that has a relatively uniform color and texture and accounts for more than 60% of the total area within the observer's field of vision. 1.3 Crust The crust refers to the weathered surface of the jade material that lacks jade-like characteristics. 1.4 Green Xinyi Nan Yu The main color of this jade is greenish-blue, with a predominant mineral composition of leaf serpentine and tremolite. It features a cryptocrystalline or metamorphic structure with visible inclusions of serpentine and other minerals. The texture is dense and fine, with a greasy luster and translucent to slightly transparent quality. 1.5 Water-like Blue Xinyi Nan Yu The main color of this jade is blue-green, with a relatively uniform color. The mineral composition primarily includes serpentine, often accompanied by chlorite and talc. It features a cryptocrystalline or metamorphic structure with visible inclusions of serpentine and other minerals. The texture is dense and fine, with a greasy luster and translucent to slightly transparent quality. 1.6 Yellow Xinyi Nan Yu The main color of this jade is various shades of yellow and yellow-green. The mineral composition primarily includes leaf serpentine or li serpentine, often accompanied by tremolite, ta