For diamonds with a Dossier report, the report number is always inscribed on the stone’s girdle because Dossiers reports do not include diamond plotting diagrams. For diamonds with a full Grading Report, which includes a detailed diamond plot, the inscription is optional, and customers can choose whether or not to have the report number inscribed on the girdle.
EGL offers inscriptions similar to GIA, but practices can vary across different EGL laboratories:
- EGL Mini Certificate (similar to GIA Dossier): This report often comes with an inscribed report number on the girdle, especially for smaller diamonds or those without detailed plotting diagrams.
- EGL Full Certificate (similar to GIA Grading Report): For diamonds with a full EGL Certificate, which includes detailed diamond plotting, the inscription of the report number on the girdle is typically optional, allowing customers to choose.