The clarity of a diamond is graded
using a microscope or eye loop at 10 power (10
times our eye as 20/20) by the amount and size
of imperfections within the stone. These imperfections
can be clear, white or black.
is free of imperfections internally and on the
FLAWLESS- free of internal imperfections,
surface blemishes present.
very , very slightly included- inclusions difficult
to see @ 10 power.
included-inclusions difficult to see @ 10 power.
SI � slightly
included, inclusions visible @ 10 power, difficult
to see with unaided eye.
imperfect , inclusions visible to the untrained
and unaided eye.
Deciding what quality or clarity is
relative to your budget and desire to own a diamond
free of natural imperfections. Inclusions within
a diamond act as obstacles to the light entering
and dispersing from the stone. Large or plentiful
inclusions block light refracting within the diamond
and diminish the overall brilliance and scintillation.
J. B. Simpson & Sons strongly recommend the clarity
grade of VS � SI 1 or better. Location of the
inclusions are vital; a diamond with marks (preferable
white or clear) that are near the outer edge will
have the least impact on light travelling within
the stone. The advantage to our client is a diamond
with full brilliance for good value.