SRD Inclusion Grading

Color Shade (CS)
# Grade Description
1 WH White
2 NV None Visible
3 BRN1 Light Brown
4 BRN2 Brown
5 BRN3 Dark Brown
Milky (Milky)
# Grade Description
1 MO None
2 NV None Visible
3 M1 Minor
4 M2 Medium
5 M3 Major
Luster (Luster)
# Grade Description
1 EX Excellent
2 VG Very Good
3 GD Good
Eyeclean (EC)
# Grade Description
1 EC1 100% Eye clean
2 EC2 75% Eye clean
3 EC3 No Eye clean
BLACK INCLUSION in Table (BT)
# Grade Description
1 BTO None
2 NV None Visible
3 BT1 Minor
4 BT2 Mediam
5 BT3 Major
Black Inclusion in Crown (BC)
# Grade Description
1 BC0 None
2 NV None Visible
3 BC1 Minor
4 BC2 Mediam
5 BC3 Major
White Inclusion in Table (WT)
# Grade Description
1 WT0 None
2 NV None Visible
3 WT1 Minor
4 WT2 Medium
5 WT3 Major
White Inclusion in Crown (WC)
# Grade Description
1 WC0 None
2 NV Non Visible
3 WC1 Minor
4 WC2 Medium
5 WC3 Major
Table Open (TO)
# Grade Description
1 TO0 None
2 NV None Visible
3 TO1 Minor
4 TO2 Medium
5 TO3 Major
Crown CLEAN (CO)
# Grade Description
1 CO0 None
2 NV None Visible
3 CO1 Minor
4 CO2 Medium
5 CO3 Major
Pavillion Open (PO)
# Grade Description
1 PO0 None
2 NV None Visible
3 PO1 Minor
4 PO2 Medium
5 PO3 Major
Expert Advise(EA)
# Grade Description
1 EA Gemologist advise