T/SZS 4020-2020 Active Group standards

T/SZS 4020-2020 Pearl Grading

T/SZS 4020-2020

Publish Date: 2020-05-15 Implement Date: 2020-05-15 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/SZS 4020-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Food processing and products

ICS Name: Jewelry

Publish Date: 2020-05-15

Implement Date: 2020-05-15

Scope

Scope: This standard specifies the terms and definitions of pearls, their classification, quality factors and grading indicators, the grading and evaluation of pearl jewelry, inspection requirements, measurement methods, and requirements for inspection reports and markings. This standard applies to cultured pearls and cultured pearl jewelry produced and sold by the Enterprise Standard Alliance for Precious Metals and Jewelry and Gemstone Products. Natural pearls and natural pearl jewelry may refer to this standard for implementation. It does not apply to pearls and pearl jewelry that have undergone treatments such as radiation or dyeing. Main technical content: This standard specifies the terms and definitions of pearls, their classification, quality factors and grading indicators, the grading and evaluation of pearl jewelry, inspection requirements, measurement methods, and requirements for inspection reports and markings. This standard applies to cultured pearls and cultured pearl jewelry produced and sold by the Enterprise Standard Alliance for Precious Metals and Jewelry and Gemstone Products. Natural pearls and natural pearl jewelry may refer to this standard for implementation. It does not apply to pearls and pearl jewelry that have undergone treatments such as radiation or dyeing.