Tools

Cut Performance Wheel

Eight measures of how a cut performs, against the T73 benchmark or any cut you choose

The stone and its performance wheel

The stone
Compared with

Drag to turn. Arrow keys work once the stone is selected.

Performance wheel: DG-Vitruvio in diamond, against the T73 Round Brilliant in diamond as an outline. Solid white marks where it reaches further, hatching where it falls short. The scores are listed below.50100Brilliance0Fire+1Scintillation+18Global+2Spread0Symmetry0Shape-norm0Tilt+1

DG-Vitruvio in diamondT73 Round Brilliant in diamond

reaches furtherfalls short

Face-up light census, a different measure from the Cut Grading Tool; Spread and Shape-norm above 100 sit on the ring.

Scores

Against the T73 Round Brilliant in diamond: ahead on 4, level on 4.

  • Brilliance93, the comparison 93, difference 0
  • Fire79, the comparison 78, difference +1
  • Scintillation98, the comparison 80, difference +18
  • Global92, the comparison 90, difference +2
  • Spread100, the comparison 100, difference 0
  • Symmetry100, the comparison 100, difference 0
  • Shape-norm100, the comparison 100, difference 0
  • Tilt93, the comparison 92, difference +1

A simulation, not a grading report.