Diamond Sealing Service

International Institute of Diamond Grading and Research is proud to provide a sealing service on request.

This service aims to further ensure the integrity of every diamond that leaves any of our global laboratories.

Our Grading Services


Grading Reports

A comprehensive study of a diamond’s carat weight, colour, clarity and cut with an accurate and to scale plotted diagram.


Table and Girdle Inscriptions

Table inscription is a proprietary technology, unique to De Beers. The discreet, proven approach, applies a miniscule inscription to the table of
the diamond, visible only at greater than 10x magnification.



Every diamond we asses receives either our official Diamond Grading Report or a more concise Diamond Identification Report.