Jewelry, Gems, & Minerals/Class 1 or class 2?
I understand that a diamond can be categorized as class 1, class 2, class 3, or class 4 depending on measurements like the size of the table, the total depth, the girdle thickness, etc. So what if my diamond measurements mostly belong to class 1, but 2 to 3 of the measurements belong to class 2?
For example, crown angle for class 1 is 34%-35% while mine is 33.5%. Girdle thickness 0.7%-2.7% while mine is 3%. Every other measurements are within class 1 diamond. My diamond is triple excellent.
Is my diamond class 1 or class 2?
I think you are referring to the diamond cut grading system and the classification of your diamond will vary with which gem lab grades your diamond (American gemological society AGS, Gemological Institute of America GIA) and what cut your diamond is (heart, princess, pear etc) For example, GIA graded diamonds, this is the grading system followed for round brilliant cut diamonds http://imgur.com/5hadsG1
But also please bear in mind that the other 'C's' are also important in diamond grading (clarity, Color, carat) You can find more information on that here http://www.brilliance.com/diamond-education