顏色
|
GIA
(Gemological Institute of America) |
AGS
(American Gem Society) |
HRD
(Hoge Raad voor Diamnt) |
無色
Colorless |
D
|
0
|
Exceptional White+
|
E
|
0.5
|
Exceptional White
|
|
F
|
1.0
|
Rare White+
|
|
近乎無色
Near Colorless |
G
|
1.5
|
Rare White
|
H
|
2.0
|
White
|
|
I
|
2.5
|
Slightly Tinted White
|
|
J
|
3.0
|
||
微黃色
Faint Yellow |
K
|
3.5
|
Tinted White
|
L
|
4.0
|
||
M
|
4.5
|
Tinted Colour
|
|
很淡黃色
Very Light Yellow |
N
|
5.0
|
|
O
|
5.5
|
||
P
|
6.0
|
||
Q
|
6.5
|
||
R
|
7.0
|
||
淡黃色
Light Yellow |
S
|
7.5
|
|
T
|
8.0
|
||
U
|
8.5
|
||
V
|
9.0
|
||
W
|
10
|
||
X
|
|||
Y
|
|||
Z
|
顏色
|
GIA
(Gemological Institute of America) |
AGS
(American Gem Society) |
HRD
(Hoge Raad voor Diamnt) |
無瑕級 |
FL
|
0
|
Loupe Clean
|
內無瑕級 |
IF
|
||
極輕微內含級 |
VVS1
|
1
|
VVS1
|
VVS2
|
2
|
VVS2
|
|
輕微內含級 |
VS1
|
3
|
VS1
|
VS2
|
4
|
VS2
|
|
微內含級 |
SI1
|
5
|
SI1
|
SI2
|
6
|
SI2
|
|
內含級 |
I1
|
7
|
P1
|
I2
|
8
|
P2
|
|
9
|
|||
I3
|
10
|
P3
|