GEM / Exceptional(9-10) (C1_5_6)

AAA / EX. FINE(8-9) (C1_5_4)

AA / FINE(6-8) (C1_4_3)

A / GOOD(4-6) (C31_5_2)

B / Commercial(3-4) (C31_7_1)

C / Lower Commercial(1-3) (C30_8_1)