Did you know that in determining a diamond's cut grade, GIA takes into account its proportions, polish and symmetry, assigning a grade ranging from Excellent to Poor? This video explains the GIA Cut Scale and how GIA determines cut grades for round brilliant cut diamonds. | 4Cs of Diamond Quality by GIA

The way a diamond handles light is the truest measure of its beauty 💎💎💎 Like GIA or IGI, GCAL grades diamonds for cut, colour, clarity, and carat weight, but they go further. Every GCAL certificate includes a Light Performance Analysis (how the diamond handles light — brilliance, fire, scintillation). Is this the future of diamond grading? | The Cut Jewellery