DD 234:1996 - Grading polished diamonds. Terminology and classification
Current
Printed version of this is available at library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail.
This Technical Report specifies the terminology and classification to be used for the grading and de-
scription 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.