4 C’s: The Cut

The cut of a diamond refers to how well its facets interact with light, its proportions, and its overall finish. Cut is an overall reference of the craftsmanship of the diamond and its brilliance. The cut is the only ‘C’ that is not influenced by nature.

A high level of precision and artistry are required to fashion a diamond so that its symmetry, proportions and polish deliver the return of light that makes it truly magnificent.

The visual effects created by a diamond’s interaction with light are evaluated by its:

  • Brightness – the white light it reflects both internally and externally,
  • Fire – the break-up of its white light into the colours of the rainbow, and
  • Scintillation – the sparkle it creates and the patterns of light and dark areas caused by reflections.

Other areas of diamond evaluation include the weight-size ratio, its symmetry of facet shapes and alignment, as well as girdle thickness (which determines its durability). The ability of a diamond to return light back to the viewer’s eye will be greatly influenced by the relationship between its angles and proportions. A diamond that is too deep or too shallow will leak light and should be avoided at any cost.

At Kalfin Jewellery, we believe the cut of a diamond is one of the most important factors in determining its quality.

We welcome you to arrange an obligation-free consultation at our Collins Street boutique in the Melbourne CBD to explore your choices. Our tutorial with real loose diamonds will ensure you make an informed decision that is tailored to your specific needs.


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The region became culturally distinguishable from the Lowlands from the later Middle Ages into the modern period.