Reference Chart for ASET

This chart and shows the effects for round brilliant cut diamonds with a 57% table. The black line is the “sweet line” accounting for the optimum proportions based on the inverse relationship between crown and pavilion angles.

This chart shows Garry Holloways recommended proportions for round brilliant cut diamonds.

Excellent:

Excellent
excellent

Very Good:

Very Good
verygood

Good:

good
Good

Fair:

Fair
fair

Daylight vs DiamCalc video

Excellent:

ExMovie
excellent

Fair:

Fair
fair