 Clarity |
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 Observation of inclusions |
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 An inclusion
is observed by the table and the pavilion to determine: |
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 Its size. |
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Its contrast. |
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Its position. |
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| Clarity scale |
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| FLAWLESS (FL) |
These stones have no imperfections inside or on the
outside of the stone under the magnification of a loupe of 10 power. |
| INTERNALLY FLAWLESS (IF) |
These stones have no inclusions under a loupe with a 10
power magnification. Loupe clean |
VVS1
VVS2 |
These stones have very small inclusions which are very
difficult to see under a loupe with a 10 power magnification. VVS = Very Very Slightly Included. |
VS1
VS2 |
These stones have small inclusions which are slightly difficult to difficult to see
under a loupe with a 10 power magnification. VS = Very Slightly Included. |
SI1
SI2
SI3 |
These stones have inclusions which are fairly easy to see under a loupe with a 10
power magnification, or visible to the naked eye. GIA, the largest and most widely accepted Gem
Laboratory in the world, does not recognize SI3 grades. SI = Slightly Included. |
| I1 |
Flaws that are visible to the naked eye. I1 = Included 1. |
| I2 |
Many flaws clearly visible to the naked eye that also
decrease the brilliance. I2 = Included 2. |
| I3 |
Many flaws clearly visible to the naked eye which
decrease the brilliance and compromise the structure of the diamond, making
it more easily cracked or chipped. I3 = Included 3. |
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| Clarity enhanced |
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If an artificially modified inclusion has been done i t will
be mentioned in « Comments » on the certificate. To detect these diamonds,  look at the stone from the table with a magnifying glass 10 X, slighlty move the stone
(for it to sparkle) you may see a small « flash ». This
flash is very fast and rather difficult to see, if you see it, you are in the
presence of a diamond called « Clarity enhanced ». You will find these terms (clarity
enhanced) written the section « Comments » on the certificate, wisch is issued by the international
laboratories (GIA, HRD, IGI, EGL, etc...). |
These diamonds should not be heated at a too
strong temperature, because the resin which was introduced to stop the hole of the laser would melt. We let to
you imagine the result.
The price of these diamonds is lower due to the artificial modification of their clarity.
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| Grades of inclusions |
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| (Click on an image to enlarge) |
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| VVS1 |
VVS2 |
VS1 |
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| VS2 |
SI1 |
SI2 |
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| SI3 |
I1 |
I2 |
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| I3 |
Drilling laser |
Hole in the table |
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| Grades of inclusions (diamond images) |
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| (Click on an image to enlarge) |
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| VVS1 |
VVS2 |
VS1 |
VS2 |
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| SI1 |
SI2 |
I1 |
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| Corrective |
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Degrade of a category a
particularly contrasted inclusion. |
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Improve of a category
an inclusion near to the edge of the stone. |
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Degrade of a category a
unit of the same inclusions size (example: 3 inclusions VS2 = SI1). |
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