- Dec 29, 2006
Could someone please explain the different classes in grading -- 1A, 1B (American Ideal Cut), 2A, 2B (International Fine Trade Cut), 3A, 3B (US Domestic Average Cut)? I''m assuming it''s best to stick with depths, percentages, angles, etc. listed in the class 1 category. An explanation would be great though. Thanks!