Finish quality, facet junctions, hearts & arrows folklore, interplay with overall cut.
Polish recounts abrasion on facets; symmetry tracks junction precision. Both interplay with overarching cut—even “Triple Excellent” can still conceal painting / digging artefacts without HD video.
- Poor polish manifests as microscopic streaks scattering light inconsistently.
- Off-centre tables or wandering culets degrade contrast patterning even if symmetry grade reads VG.
- Reflectors / Angular Spectrum maps remain the fastest consumer gut-check—not just spreadsheets.
- Fancy cuts carry extra symmetry tolerances alongside length-to-width taste thresholds.
