Polish and symmetry are two other important aspects of the cut. Polish describes
the smoothness of the diamond's facets (surface conditions), and symmetry refers
to alignment of the facets (the exactness of shape and placement of the facets).
Symmetry is an important element of diamond finish. Symmetry refers to the exactness
of the shape and arrangement of facets. This includes naturals, misshapen and extra
facets, off-center culets and tables, wavy and out-of-round girdles, misalignment
of crown and pavilion facets. To the unaided eye, finish features usually have little
effect on appearance; they are like pin point inclusions. The importance of symmetry
is of lesser consequence in diamonds that have lower clarity grades whereas, it
is more important in diamonds that have high clarity grades. Here also diamonds
are graded as cut grade parameters like excellent, very good, good, fair and poor.
Symbol
|
EX
|
VG
|
GD
|
FR
|
PR
|
Description
|
Excellent
|
Very Good
|
Good
|
Fair
|
Poor
|