Learn About Diamond Symmetry
Symmetry is an important element of diamond finish. Symmetry refers to
the exactness of the shape and arrangement of facets. This includes
naturals, misshapen facets 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 pinpoint inclusions. The importance of
symmetry is less important in diamonds that have lower clarity grades.
Symmetry is more important in diamonds that have very high clarity
grades.
When
selecting your diamond, choose one of the following symmetry grades:
Symmetry is listed on the certified diamond grading report. Few diamonds
are available with Excellent or Very Good symmetry. Diamonds with a
symmetry grade of Good offer exceptional beauty and are purchased
most frequently. Sun Jewelry has not to this date received a diamond
returned due to a customer dissatisfaction with the symmetry grade of
Good. Although symmetry is important, it is best to place more emphasis
on diamond depth percentage, table percentage, crown and pavilion height
as well as color, clarity and weight. Diamonds with fair to extremely
poor symmetry should be avoided. Listed below is a list of abbreviations
and brief descriptions of symmetry grades that are used by GIA, EGL, and
IGI.
-
EX or E - Excellent, Flawless at 10 power
-
VG or VGD -Very Good, Extremely difficult to locate under 10
power
-
GD, GO, G - Good, Very diffucult to see under 10 power
-
F, FR, FA - Fair, Noticable under 10 power
-
PR, PO, P - Poor, Easy to see under 10X / Visible to unaided
eye
-
VP, VE, - Very Poor, Relatively easy to see with the unaided
eye
-
EX or EP - Extremely Poor, Obvious to see with unaided eye
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