Milind Mathur, Partner and Creative Director at Kohinoor Jewellers Agra says, "The clarity of diamonds ranges from Flawless to I1 or I2. Depending on the grade, one can determine the inclusions.

you cannot see anything in the stone other than the diamond,” Shor says. The clarity scale includes 11 specific grades running from FL, meaning Flawless, to I1, I2 and 13, meaning Included.