- weight and size
The Carat pertains to the weight of a diamond. A carat is usually divided in
100 points (very small diamonds
- symmetry and proportions
can be divided in 1000 points, i.e. 0.005
carat). One carat equals 0.2 grams. A one carat brilliant round cut
a diameter of 6.5 millimeters.
Refers to the symmetry and proportions of the stone, it is what gives the
diamond the ability to reflect light
(sparkle). It is the only aspect of the 4
C’s that is directly influenced by man. The other 3 are dictated by nature.
“cut” is often confused with the "shape".
- amount of inclusions
The amount of inclusions (internal) and blemishes (external) are rated to
express how transparent and how
strong the diamond is. For jewelry grade
diamonds the rating is from Small inclusion 2, to Flawless.
- from white “transparent” to yellowish
Graded from D (best) to I (near colorless).
K to Z (noticeable color, not
suited for jewelry)
- from round to square
Defines the outer shape i.e. round, triangular, princess “square”, oval, pear
etc… Any of the above
shapes can have an Ideal to poor cut. The shape has
nothing to do with the quality of the cut.
- reports & appraisals
- A diamond report (certificate) is a document that will
validate the quality and
measurement (4 C’s) of the stone.
- A diamond appraisal will inform you of the retail value of your stone, an important
item for insurance purposes