T/JSAS 027-2022 Active

Scope: This document specifies the product grades, processing procedures, inspection methods, inspection rules, and packaging and transportation requirements of Bai Shui Jing brand products. This document is applicable to the production of Bai Shui Jing brand products; Main technical content: Crystal is mainly composed of quartz minerals, with a chemical composition of silica dioxide (which may contain a small amount of titanium, iron, aluminum, etc.), and is a mineral crystalline body with artistic value. Optical characteristics: Uniaxial positive opticality, Mohs hardness 7, density 2.66 (+0.03, -0.02) g/cm3, refractive index 1.544~1.553, birefringence 0.009. (The above content is quoted from GB/T 16553 "Jade and Gemstone Identification") 3.2 Crystal card is made of natural crystal as the main raw material, and is a rectangular-shaped crystal product processed by mechanical and manual methods such as cutting, polishing, and finishing. It is usually used as a pendant, a handheld ornament, or a decorative item, and can also be made into other shapes according to actual needs. 3.3 White crystal is made of natural white (or colorless) crystal as the main raw material, and is a rectangular-shaped crystal product processed by mechanical and manual methods such as cutting, polishing, and finishing according to T/JSAS 027-2022 standards. It is usually used as a pendant, a handheld ornament, or a decorative item, and can also be made into other shapes according to actual needs.