About diamonds

Value of the diamond depends on four main characteristics: Carat, Color, Clarity and Cut, also called «4С».


Weight of the diamond is measured in carats, a metric "carat" is defined as 200 milligrams.

Weight Size
0,03ct 2мм
0,1ct 3мм
0,3ct 4,3мм
0,5ct 5,2мм
1ct 6,5мм
1,5ct 7,5мм
2ct 8,22мм
3ct 9,4мм


The diamond color evaluation is based on the absence of color.


Diamond clarity is a quality of diamonds relating to the existence and visual appearance of internal characteristics of a diamond called inclusions.

Clarity Clarity description
F Flawless No inclusions and no blemishes visible under 10x magnification
IF INTERNALLY FLAWLESS No inclusions visible under 10x magnification
VVS1 VVS2 VERY, VERY SMALL INCLUSIONS Inclusions so slight they are difficult for a skilled grader to see under 10x magnification
VS1 VS2 VERY SMALL INCLUSIONS Inclusions are observed with effort under 10x magnification, but can be characterized as minor
SI1 SI2 SMALL INCLUSIONS Inclusions are noticeable under 10x magnification
I1 I2 I3 IMPERFECT Inclusions are obvious under 10x magnification which may affect transparency and brilliance


A diamond's cut is crucial to the stone's final beauty and value. Cut can be rated as Excellent, Very good, Good, Fair or Poor.