Journal · May 2026

A Glossary of Rare Cuts

Published 13 May 2026

Six cuts. What each one is, what defines it optically, and one thing to check before you buy.

Portuguese Cut

A round brilliant with 160 or more facets — nearly three times the facet count of a standard brilliant. The additional facets produce dense, overlapping light return rather than distinct scintillation flashes. Designed for low, directional, warm light.

Before you buy — verify precision symmetry. The facet geometry amplifies any inclusions at depth, and asymmetry collapses the optical effect entirely.
Old Mine Cut

The original brilliant, developed before electric light, for candlelight and oil lamps. High crown, small table, open culet, approximately 58 facets in an imperfect cushion-square silhouette. The irregularity is hand-finished character, not manufacturing deficiency.

Before you buy — assess in warm light. Under overhead LED it will underperform a modern cut by design, not by defect.
Ashoka Cut (Criss Cut)

An elongated cushion with a criss-cut faceting pattern — facets that cross each other in a weave rather than aligning in rows. Produces soft, diffused light return rather than direct reflection. 62 facets.

Before you buy — examine the criss-cut pattern for even light distribution. Dark patches across the facet weave indicate poor cutting.
Dutch Marquise

A marquise with a broader, shorter silhouette than the modern marquise — length-to-width ratio of 1.6 to 1.7, step-brilliant hybrid faceting. An antique-inspired interpretation rather than a formally standardised category.

Before you buy — check tip symmetry and bow-tie. Both are the most common points of failure in this cut.
Moval

A hybrid of oval and marquise: the continuous curve of an oval tapering to a soft point at each end. Brilliant-cut faceting. Eliminates sharp marquise tips while preserving directional elongation.

Before you buy — check for bow-tie shadow. A well-cut moval has none; a heavy bow-tie cannot be corrected.
Elongated Hexagon Step Cut

A hexagon extended along one axis, with step-cut faceting. Returns light in broad, rectangular planes — the hall-of-mirrors effect that reveals the interior of the stone rather than dispersing light outward.

Before you buy — step cuts show inclusions openly. VS1 or VVS clarity is the working minimum for this cut.
All Cuts
Portuguese Old Mine Ashoka Dutch Marquise Moval Elongated Hexagon Step