顏色
D - F
Colorless
G - J
Near Colorless
K - M
Slightly Tinted
N - R
Very Light Yellow
S - Z
Light Yellow or Brown
淨度
IF
VVS 1 VVS 2
VS 1 VS 2
SI 1 SI 2
I1 I2 I3
卡
2 cts
Ot 8mm
1.75 cts
Ot 7.75mm
1.50 cts
Ot 7.50mm
1.25 cts
Ot 7mm
1 cts
Ot 6.50mm
0.75 cts
Ot 5.80mm
0.50 cts
Ot 5mm
0.25 cts
Ot 4mm
0.10 cts
Ot 3mm
