GB/T 18781-2023 Active National standards

GB/T 18781-2023 Cultured pearl grading

Publish Date: 2023-05-23 Implement Date: 2023-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Price: $ 54

Download

Basic Information

Standard Code: GB/T 18781-2023

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Decorative arts and crafts

ICS Name: Jewelry

Publish Date: 2023-05-23

Implement Date: 2023-12-01

Pages: 16 pages

Scope

This document specifies the quality factors and grades of cultured pearls (hereinafter referred to as "pearls"), the pearl grading standards, the requirements for grading personnel, and the basic content of grading reports or certificates, and describes the inspection methods.
This document is applicable to quality evaluation activities related to pearl production and trade.
This document is not applicable to the grading of pearls that have undergone treatments such as irradiation and dyeing, or composite pearls.
The grading of natural pearls and pearl jewelry can be carried out with reference to this document.
Note: Composite pearls refer to pearls that are joined together with other objects and give people an overall impression.