IS

Inernally Flawless

VVS-1

Very Very Slightly Included-1

VVS-2

Very Very Slightly Included-2

VS-1+

Slightly Better than VS-1

VS-1

Very Slightly Included-1

VS-2+

Slightly Better than VS-2

VS-2

Very Slightly Included-2

SI-1+

Slightly Better than SI-1

SI-1

Slightly Included-1

SI-1-

Slightly lower than SI-1

SI-2+

Slightly Better than SI-2

SI-2

Slightly Included-2

SI-2-

Slightly lower than SI-2

SI-3+

Slightly better than SI-3

SI-3

Slightly Included-3

SI-3-

Slightly lower than SI-3

I-1+

Slightly better than I-1

I-1

Included -1

I-1-

Slightly lower than I-1

D+, D,& D-

Colorless

E+, E & E-

F+, F & F-

G+, G & G-

Near Colorless

H+, H & H-

I+, I & I-

J+, J & J-

K+, K & K-

Faint

L+, L & L-

M+, M & M-

N to R

Very Light

S to Z

Light

EX

Excellent Polish

VG

Very Good Polish

G

Good Polish

F

Fair Polish

EX

Excellent Symmetry

VG

Very Good Symmetry

G

Good Symmetry

F

Fair Symmetry

EX

Excellent H&A (100%)

VG

Very Good H&A (80%)

N

None Fluorescence

FNT

Faint Fluorescence

MED

Medium Fluorescence

STG

Strong Fluorescence

VSG

Very Strong Fluorescence

EX

Excellent Luster

VG

Very Good Luster

G

Good Luster

F

Fair Luster

N

None

PP-1

Pin Point Minor Inclusion

PP-2

Pin Point Medium Inclusion

CLR-1

Crystal Minor Inclusion

CLR-2

Crystal Medium Inclusion

SPR-1

Spreaded Minor Inclusion

SPR-2

Spreaded Medium Inclusion

SPR-3

Spreaded Heavy Inclusion

FR-1

Feather Minor Inclusion

FR-2

Feather Medium Inclusion

FR-3

Feather Heavy Inclusion

CLD-1

Cloud Minor Inclusion

CLD-2

Cloud Medium Inclusion

CLD-3

Cloud Heavy Inclusion

N

None

HL

Hair Line Open Inclusion

SM

Small Open Inclusion

MD

Medium Open Inclusion

HV

Heavy Open Inclusion