Rare & Unusual Cuts
A grouping for cuts that don't fit cleanly into the brilliant/step/antique/rose taxonomy — hybrids combining brilliant and step-cut faceting (like the radiant), true geometric shapes, and historic pre-brilliant styles.
What distinguishes this family
These cuts are grouped by "doesn't fit elsewhere" rather than by a shared faceting logic, so buying/setting guidance genuinely varies cut to cut — read the individual cut's own guide for specifics.
Cuts in this family
A radiant is a rectangular or square shape with cropped corners that combines a step-cut outline with full brilliant faceting, designed to keep more brilliance than a straight emerald cut.
A briolette is a fully faceted, usually pendant-drilled teardrop or elongated-oval shape with no flat table, no girdle and no pavilion in the modern sense — the entire surface is covered in continuous, wrapping triangular facets.
A portrait cut diamond is an extremely thin, flat, minimally faceted slice — historically cut to be laid directly over a miniature painted portrait so the artwork stayed visible while the diamond protected and enhanced it.
Jewellery uses
Varies significantly by cut — see each cut's own guide.
Browse rare & unusual cuts on Chaos
See live availability across every cut in this family, or post a sourcing request.