Most diamonds contain very tiny natural birthmarks known as inclusions. However,
the fewer and smaller the inclusions are, the less likely they will interfere with the passage
of light through the diamond, and the more beautiful the diamond will be. Diamond is
nature's material that is most capable of producing a maximum amount of brilliance. A
diamond that is free of both inclusions and surface blemishes is very rare and therefore
more valuable.
This analysis is carried out using the IGI scope and a loupe 10x under the experienced
eye of laboratory gemologists. A diamond is said to be "Internally Flawless" when it
presents no internal defects under 10x magnification .*
stone
clarity
description
FL, IF
Internally Flawless
Free from internal blemishes visible under 10x
magnification (small external details tolerated).
VVSI1, VVSI2
Very Very Slightly Included
Inclusions and/or external blemishes very difficult
to locate under 10x magnification.
VSI1, VSI2
Very Slightly Included
Inclusions and external blemishes difficult
to locate under 10x magnification.
SI1, SI2
Slightly Included
Inclusions and external blemishes easy to locate
under 10x magnification
I1, I2 I3
Imperfect
Slight to heavy Inclusions and external blemishes
easy to locate with naked eye.
