Education

Diamond Clarity

Diamonds are graded on their clarity. The diamond grading system was developed by the Gemology Institute of America. Diamond clarity is based on the number of blemishes and inclusions a diamond has. Inclusions are flaws that are inside the diamonds. Blemishes are the flaws found on the outside or surface of the diamond. Flawless diamonds means there are no inclusions or blemishes inside the diamond or on the surface of the diamond. Imperfect diamonds means there are inclusions or blemishes on the diamond that are visible to the naked eye and there are many diamond grades in between. Below is a diamond grades chart that shows the differences between diamond grades, inclusions in the diamond, and blemishes on the diamonds.  

Diamond Grades

Grade

Definition

Inclusions

Blemishes

F

Flawless
(Extremely Rare)

None

None

IF

Internally Flawless
(very rare)

None

Some small

VVS1 – VVS2

Very Very Slightly Included

Minute
(VERY difficult to detect)

None

VS1 – VS2

Very Slightly Included

Minute
(difficult to detect)

None

SI1 – SI2

Slightly Included

Minute
(easy to detect)

None

I1, I2, I3

Included

Visible with unaided eye

Visible with the unaided eye


Although the F through SI diamond grades have an effect on the price, they do not effect the unmagnified appearance of the diamond in diamond engagement ring or other jewelry. Sylvie Collection does not offer anything less than (Sylvie to fill in grade) diamonds.

There are also different diamond ratings based on what organization is doing the diamond grading. Below you will find a chart for the diamond ratings of these different agencies and how they compare to the other organization’s diamond ratings.

The diamond grading agencies are:
GIA – Gemology Institute of America
CIBJO – Confederation Internationale de la Bijouterie
AGS – American Gem Society
IDC – International Diamond Council
EGL – European Gemological Laboratory

Diamond Grading Systems by Various Organizations

GIA

F

IF

VVS1

VVS2

VS1

VS2

SI1

SI2

I1

I2

I3

CIBJO (Over .47 ct)

Loupe Clean

VVS1

VVS2

VS1

VS2

SI1

SI2

P1

P2

P3

CIBJO (under .47 ct)

Loupe Clean

VVS

VS

SI

P1

P2

P3

AGS

0

0

1

2

3

4

5

6

7-8

8-9

9-10

IDC

Loupe Clean

VVS1

VVS2

VS1

VS2

SI1

SI2

P1

P2

P3

EGL

IF

VVS1

VVS2

VS1

VS2

SI1 – SI2

SI2 – SI3

SI3 – P1

P2

P3

View more of our breathtaking diamond engagement rings or other diamond jewelry.