Preliminary Quality Opinion Reports

Welcome to Preliminary Quality Opinion Report

We’re the first third independent evaluation for colored stone.

Color 

Poor

Fair

Good

Very Good

Excellent

1-2

3-4

5-7

8-9

10


Tone

Very Light

Light

Medium

Dark

Very Dark

0-20

30-40

50-60

70-80

90-100


Clarity

HI1

VI 2

VI 1

MI 2

MI 1

LI 2

LI 1

Clean

1-2

3

4
5

6

7

8

9-10


Cut

Poor

Fair

Good

Very Good

Excellent

1-2

3-4

5-7

8-9

10



Brilliancy

Poor

Fair

Good

Very Good

Excellent

10-20

30-40

50-60

70-80

90-100