Jewellery and precious metals. Grading polished diamonds. Terminology, classification and test methods PAS 015 BS EN IEC 60352‑4 on

BS EN IEC 60352‑4 on non-accessible insulation displacement of solderless connection is useful for:

4534) forgings to ensure operational stability and corrosion resistance in aerospace applications

radio-frequency electromagnetic fields

BS EN 17254 is a European standard on the determination of gluten in foodstuffs that detect the side effects of gluten on the human body

titration of quinoline-8-ol

Jewellery and precious metals. Grading polished diamonds. Terminology, classification and test methods PAS 015 BS EN IEC 60352‑4 on1 Scope This document specifies the terminology, classification and the methods that are used for the grading and description of single unmounted polished diamonds over 0,25 carat (ct). This document applies to natural, unmounted, polished diamonds. It is not to be used for fancy coloured diamonds, synthetic diamonds, treated diamonds (other than is allowed for in 7. 4), nor for assembled stones.