Every LEO passes the test by GemEx Systems which verifies its “Return of Light” — the level of brilliance your diamond achieves. A GemEx certificate will be issued to every LEO weighing 0.18ct or above.
IGI Certificate of 4C’s Grading
The International Gemological Institute (IGI) is one of the most prominent gemological laboratories in the world. It certifies The Leo Diamond®’ s unsurpassed 4C’s grading (Cut, Color, Clarity and Carat weight), proving its unparalleled quality (for every LEO weighing 0.18ct or above).
Customers may verify the certificates of their specific The Leo Diamond® at their convenience by simply entering the unique LEO number at www.leodiamond.com.hk.