A Diamonds value
is graded on the 4C's.
Below is a brief explanation of how diamonds are graded.
Carat
The weight of a diamond is expressed
in carats. 1 carat = 0,2 gram
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.05 ct |
.5 ct |
1 ct |
2 ct |
3 ct |
5 ct |
7 ct |
Color
Color is graded by comparison
to master stones under standardized artificial light, equivalent
to northern daylight.
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M |
N-O |
P-R |
S-Z |
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Tinted
Color |
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Clarity
A diamond is called loupe clean if, after examination by an
experienced grader with a loupe 10x under normal light conditions,
it has been found free of internal characteristics. The other
clarity grades are determined by the size, position, brightness
and number of internal characteristics. External characteristics
and structure phenomena can be mentioned under
"identification marks" or "comments". The
lowest clarity grades on the scale (indicated by p for piqué)
refer to inclusions that can be seen by an experienced grader
with the naked eye.
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LC |
VVS1 |
VVS2 |
VS1 |
VS2 |
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SI1 |
SI2 |
P1 |
P2 |
P3 |
Cut
The description of the cut is split into a separate description
of the proportions (angles of inclination and proportional
relations between the various parts of the stone) and finish,
which is mainly concerned with symmetry deviations and the
positioning of the facets.
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