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  • BSI
    DD 234:1996, ISO/TR 11211:1995 Grading polished diamonds. Terminology and classification
    Edition: 1996
    $313.97
    / user per year

Description of DD 234:1996 1996

This Technical Report specifies the terminology and classification to be used for the grading and description of polished diamonds.

This Technical Report shall only be used for natural, unmounted, polished diamonds. It shall not be used for synthetic diamonds, treated diamonds (other than is allowed for in 3.3), or for assembled stones (see 3.5).

A terminology and classification for the colour of fancy coloured diamonds (see 5.1.2) is in the course of preparation.

Test methods concerning the technical application of this terminology and classification are in the course of preparation.



Specifies the terminology and classification to be used for the grading and description of natural, unmounted, polished diamonds.

Standard NumberDD 234:1996, ISO/TR 11211:1995
TitleGrading polished diamonds. Terminology and classification
StatusDefinitive
Publication Date1996-06-15
Identical National Standard OfISO/TR 11211:1995
DescriptorsSurface defects, Inclusions, Flaws, Colour, Diamond, Precious stones, Defects, Terminology, Weight (mass), Shape, Surface texture, Classification systems, Jewellery, Grades (quality), Grading (quality), Polishing
ICS39.060 Jewellery, 01.040.39 Precision mechanics. Jewellery (Vocabularies)
CommitteeSTI/53
ISBN0 580 25917 X
PublisherBSI
Pages20

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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