BSI 20/30406119 DC:2020 Edition
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BS ISO 24016. Jewellery and precious metals. Grading polished diamonds. Terminology, classification and test methods – Part 1. Terminology and classification
Published By | Publication Date | Number of Pages |
BSI | 2020 | 64 |
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 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 Subclause 7.4), nor for assembled stones.