Beyond The 4Cs

While all grading reports assess diamond for colour, clarity, cut and carat weight (the standard 4Cs), Forevermark individually selects diamonds against additional rigid criteria to ensure that only the most beautiful diamonds become Forevermark.

This assurance comes from Forevermark’s exacting selection process that is so rigorous, less than 1% of the world’s diamonds can become Forevermark.

A standard grading report only tells part of a diamond’s story as the 4Cs are only four of the many characteristics of a diamond. In fact, since every diamond is as unique as a snowflake, even two diamonds with the same 4Cs grade may not be the same and therefore not equally beautiful.

Flaws such as large inclusions, and any cloudiness or haziness in appearance will in turn affect the cut and polished diamond’s brilliance. Therefore, these diamonds are not accepted for Forevermark. While all of these features may not affect a diamond’s clarity on grading report, Forevermark sees them as limitations to beauty.

In addition, if there are flaws inherent in the rough diamond, such as evidence of large inclusions or clouds, the passage of light could be obstructed, compromising its brilliance and beauty.

Diamonds exhibiting these qualities are not accepted to become Forevermark. Even diamonds that meet Forevermark’s minimum clarity grading standard (Slightly Included) yet have clarity features that are visible to the unaided eye, will be rejected.


A carat is the metric unit used to measure a diamond’s weight. One carat equals 200 milligrams, and each carat is divided into hundredths called points.

Forevermark diamonds are available from 0.14 carat upwards.


Extremely specific parameters of angle and dimension are applied, with strict attention to the polished finish.

Look for a diamond with at least Very Good cut grade to maximise aspects of beauty, light, reflection, scintillation, contrast and pattern as well as fire.

A well-cut diamond provides a balance between brilliance, fire and scintillation.


Clarity measures the purity of the diamond; how free it is from tiny blemishes.

The clarity grade a diamond is given is determined by the degree to which these natural features are visible at ten times magnification and the number, type, colour, size and position of the features in the diamond.

Forevermark diamonds are available from flawless to SI2 (Slightly Included) providing any inclusions do not interfere with the beauty of the diamond, as determined by our experts at a Forevermark Diamond Institute.


Forevermark inscribes diamonds from D to L colour (from D to Y-Z color for 2.00ct and larger) as well as all fancy colours.

In this scale, ‘colourless’ diamonds D, E, and F show so little difference that it takes an expert with sample diamonds of known grades to distinguish one from another.

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