Subject: Isee2 Score Patrick Join date: 29/04/2004 Posted: 29/04/2004  22:05:00 Posts: 1 I understand that an ISEE2 score of 10 is the highest a diamond can be rated at but how many of these exist and how many 9.9 diamonds are there? The staff at the store I purchased my diamond have never seen a 9.9 or 10. Dave Lapa Join date: 12/02/2003 Posted: 29/04/2004  22:20:00 Posts: 38 Dear Patrick, Indeed a score of "10" is not possible as the apparatus measures the light reflection and there is always some leakage occuring. A score of "9.9" is very rare. Very best regards Davy