GIA, AGS, & Commercial Grading Conversion Charts

CLARITY
GIA
AGS
COMMERCIAL GRADING
Flawless 0 Clean
Internally Flawless
VVS1 1
VVS2 2 Cleanish
VS1 3
VS2 4 VS
SI1 5
SI2 6 SI
I1 7
I2 8 Pique1
9 Pique 1
I3 10 Pique 3

Table of Contents

Encyclopedia Home
Introduction
The 4 C's
Terminology
Depth and Table Percentages
How to use The Diamond Buying Guide
GIA, AGS, & Commercial Grade Conversion Charts
Round Brilliant , Brilliant, Old Mine Cut
Pear and Oval Cuts
Marquise Cut
Heart Shape
Princess and Radiant Cuts
Emerald, Cushion, and Carre Cut
Trillions
 

COLOR
GIA AGS COMMERCIAL
GRADING
D 0 Collection
White
E
1
F
2
G White
H 3
I 4
J 5 Commercial
White
K
6
L
M 7 Top Light Silver
(Top Light Cape)
N
O 8
P LightSilver
(Light Cape)
Q
R 9
S
T Silver
(Cape)
U 10
W
W