ISO 24016:2020

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Jewellery and precious metals - Grading polished diamonds - Terminology, classification and test methods

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ISO 24016:2020

Jewellery and precious metals - Grading polished diamonds - Terminology, classification and test methods

PUBLISH DATE 2020
ISO 24016:2020

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
  • assembled stones.
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