GB/T 40746-2021

Active

Freshwater nucleated pearl

淡水有核珍珠

Standard Type

GBT

ICS

67.120.30

CCS

B52

Status

Active

Issue Date

2021-10-11

Implementation

2022-05-01

Centralized Committee

农业农村部

Issuing Authority

国家市场监督管理总局、中国国家标准化管理委员会

Application Summary AI generated

This standard specifies the classification, technical requirements, inspection methods, and grading criteria for freshwater nucleated pearls. It is applied in the jewelry and aquaculture industries for quality assessment, trade, and certification of cultured pearls produced in freshwater environments. The standard ensures consistency in evaluating pearl size, luster, surface quality, and nacre thickness for commercial transactions and consumer protection.

Related Standards

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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.