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GIA官方網站查詢證書資料為什麼要選我們
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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

　

　

淨度 GIA
(Gemological Institute of America)		 AGS
(American Gem Society)		 HRD
(Hoge Raad voor Diamnt)

無瑕級
Flawless

 FL 0 Loupe Clean

內無瑕級
Internally Flawless

 IF

極輕微內含級
Very Very Slightly Included

 VVS1 1 VVS1
VVS2 2 VVS2

輕微內含級
Very Slightly Included

 VS1 3 VS1
VS2 4 VS2

微內含級
Slightly Included

 SI1 5 SI1
SI2 6 SI2

內含級
Included

 I1 7 P1
I2 8 P2
9
I3 10 P3