CARAT (weight and size)
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The Carat pertains to the weight of a diamond. A carat is usually divided in 100 points (very small diamonds can be divided in 1000 points, i.e. 0.005 carat). One carat equals 0.2 grams. A one carat brilliant round cut diamond has a diameter of 6.5 millimeters.


CUT (symmetry and proportions)
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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. The “cut” is often confused with the “shape”.


CLARITY (amount of inclusions)
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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.


COLOR (from white “transparent” to yellowish)
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Graded from D (best) to I (near colorless).
K to Z (noticeable color, not suited for jewelry)


Shape (from round to square)
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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.


Diamond reports and appraisals
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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.