000 or triple zero is used in reference to the three cut aspects – proportions, symmetry, polish – that require to be ‘ideal’. AGS 000 / Triple Zero: Ideal proportion 0, ideal polish 0, ideal symmetry 0. AGS 000 or Triple Zero is the highest cut grade that a diamond can have. It is the rare combination of ideal proportions, polish and symmetry.
The AGS Angular Spectrum Evaluation Tool (ASET) is the only diamond cut grading tool endorsed by the science community. ASET is a device that gives the viewer a color-coded map of light usage. ASET Maps are used to assess the brightness, contrast and leakage of light in a diamond.