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A diamond’s cut refers to the balance of proportion, polish and symmetry to maximise the stone’s light performance. This is arguably the most important of the four C's, as the cut has the most significant effect on the diamonds appearance and sparkle.


This refers to the natural colour or lack of colour visible within a diamond, not the coloured flashes of light the diamond emits when it moves, known as fire. Diamond Colour is graded alphabetically from D (Colourless) to Z (Light Yellow).

At EF Studios we work with D and E coloured laboratory diamonds, ensuring the brightest and best quality stones.


Clarity refers to how clear a diamond is, grading its purity according to the number of imperfections or inclusions present within the stone. 

Our EF Studios diamonds range between the VVS1-VS1. We strive to only work with the most exquisite diamonds that deliver on our commitment of balancing quality and affordability.


Carat (ct.) refers to the specialised unit of measurement used to weigh a diamond and other gemstones.