Our Grading System

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Carat
Size Range 0.18 Up
Clarity
FL, IF, VVS1, VVS2, VS1, VS2, SI1, SI2, I1
Color
D, E, F, G, H, I, J, K, L M N-R S-Z
Cut
Cut Grades Description
EX Excellent
G Good
F Fair
Polish
Polish Grades Description
EX Excellent
G Good
F Fair
Symmetry
Symmetry Grades Description
EX Excellent
G Good
F Fair
White Inclusion Base
Grade Inc.Type Location Size/Des
N(WC0/WT0) White -- None
NV White -- None Visible
WC1 White Crown Minor
WT1 White Table Minor
WC2 White Crown Medium
WT2 White Table Medium
WC3 White Crown Major
WT3 White Table Major
Black Inclusion Base
Grade Inc.Type Location Size/Des
N(WC0/WT0) Black -- None
NV Black -- None Visible
BC1 Black Crown Minor
BT1 Black Table Minor
BC2 Black Crown Medium
BT2 Black Table Medium
BC3 Black Crown Major
BT3 Black Table Major
Open Base
Grade Inc.Type Location Size/Des
N(WC0/WT0) Open -- None
NV Open -- None Visible
OC1 Open Crown Minor
OT1 Open Table Minor
OC2 Open Crown Medium
OT2 Open Table Medium
OC3 Open Crown Major
OT3 Open Table Major
Fluorescene
Fluorescence Grades Parameters
N None Fluorescence
FNT Faint Fluorescence
MED Medium Fluorescence
STG Strong Fluorescence
VST V.Strong Fluorescence
Colour Shade Base
Grade Color Shade Description
N WH/OF WH/YL --
NV Brown/Gray/Pink None Visible
BRN1 Brown Faint
BRN2 Brown Light
BRN3 Brown Dark
Milky Base
Grade Inc. Type Size/Des
N(M0) Milky None
NV Milky Minor
M1 Milky Minor
M2 Milky Medium
M3 Milky Major
Granning Base
Grade Inc. Type Size/Des
N None NO
INT Y Internal Graining Yes
SRF Y Surface Graining Yes
Eye Clean Base
Grade % Size/Des
EC1 90% - 100% Sure
EC2 50% - 74% Medium
M1 Milky Minor
EC3 25% - 49% Medium
V 0% - 25% Inclusion visible
Fancy Color
Intensity Overtone Fancy Color
Fancy Light Greenish Green
Fancy Yellowish Yellow
Fancy Intense Orangish Orange
Fancy Dark Pinkish Blue
Fancy Deep Brownish Pink
Fancy Vivid -- Brown
NVDark Brownish Purplish