The hexagon step cut is a faceting style in which a gemstone is fashioned with a regular six-sided outline and dressed with concentric rows of rectangular or trapezoidal facets on both the crown and pavilion. Each row of facets runs parallel to the girdle's six edges, producing the characteristic staircase profile that defines all step-cut families. The result is an architectural, almost crystallographic appearance — one that privileges the interior of the stone over surface brilliance, drawing the eye inward through successive planes of reflected light rather than scattering it outward in the manner of a brilliant cut.

Geometry and Facet Architecture

In a well-proportioned hexagon step cut, the girdle outline is a regular or near-regular hexagon, with interior angles of approximately 120 degrees at each corner. The crown typically carries two to four concentric rows of elongated rectangular facets, a table facet at the apex, and corner facets that resolve the geometry at each of the six vertices. The pavilion mirrors this arrangement, with rows of facets converging toward a keel line or, in shallower cuts, a flat culet. Corner handling is critical to the cut's visual success: sharp, unmodified corners concentrate stress and risk chipping, so cutters frequently introduce small additional facets — sometimes called corner breaks — at each vertex to relieve mechanical vulnerability without significantly disrupting the hexagonal silhouette.

The depth-to-width ratio of a hexagon step cut is calibrated primarily around the gemstone's colour. Deeply saturated material is cut shallower to allow more light to escape through the table, lightening the face-up tone; paler material is cut deeper to lengthen the optical path and intensify apparent colour. This relationship between geometry and colour performance is one of the principal reasons step cuts — including the hexagon variant — remain the preferred choice for strongly coloured transparent gemstones.

Optical Character

Because the facets of a step cut are large, flat, and oriented parallel to one another, they function as mirrors rather than as the multiple angled reflectors found in brilliant cuts. The hexagon step cut therefore produces broad, calm flashes of light — sometimes described as the hall-of-mirrors effect — rather than the scintillating pinpoint sparkle associated with round brilliants or cushion brilliants. Inclusions and internal features are correspondingly more visible face-up, which places a premium on clarity in material selected for this cut. Conversely, the same optical transparency that exposes inclusions also reveals the depth and purity of colour in fine, clean specimens, making the cut exceptionally flattering for richly saturated aquamarines, sapphires, and tourmalines of high clarity.

Pleochroic gemstones — those that display different body colours when viewed along different crystallographic axes — require careful orientation before cutting. A cutter fashioning a strongly pleochroic material such as tanzanite or indicolite tourmaline into a hexagon step cut must align the table perpendicular to the axis that yields the most desirable face-up colour, since the large table facet will dominate the visual impression.

Preferred Gemstone Materials

The hexagon step cut is most frequently encountered in coloured gemstones rather than diamonds. Among the materials most commonly fashioned in this form:

• Aquamarine — the pale-to-medium blue beryl variety is a natural candidate; its typically high clarity and moderate saturation reward the step cut's emphasis on colour depth and transparency.
• Sapphire — both blue and fancy-colour sapphires appear in hexagon step cuts, particularly in custom and bespoke work where the geometric outline complements a contemporary or architectural setting design.
• Tourmaline — indicolite, Paraíba-type, and chrome tourmalines are cut in this form when rough crystal geometry and clarity permit; the hexagonal silhouette echoes the trigonal symmetry of the tourmaline crystal system.
• Morganite and other beryls — the beryl family's characteristic hexagonal prismatic crystals make hexagonal outlines a natural extension of the rough's own geometry, minimising yield loss.
• Amethyst and citrine — large, clean quartz material is sometimes fashioned into hexagon step cuts for statement jewellery and collector pieces.

In diamonds, the hexagon step cut is considerably rarer. It appears most notably in Art Deco jewellery of the 1920s and 1930s, a period during which geometric outlines — hexagons, octagons, triangles — were embraced as expressions of the era's enthusiasm for abstraction and machine-age precision. Contemporary designers working in a modernist idiom have revived the form, and a small number of specialist cutters produce hexagon step-cut diamonds for bespoke commissions.

Historical and Design Context

The hexagon as a design motif carries deep historical resonance in decorative arts, from Islamic geometric tiling to the honeycomb structures observed in natural science. In jewellery, the hexagonal outline gained particular currency during the Art Deco period, when Cartier, Van Cleef and Arpels, and their contemporaries drew freely on geometric abstraction. Hexagon step-cut stones appeared as centrepieces in platinum-set brooches and as repeating elements in articulated bracelet designs, their flat, mirror-like facets well suited to the period's preference for cool, architectural elegance over Victorian floral exuberance.

In contemporary jewellery, the hexagon step cut occupies a distinct niche between the ubiquitous oval and the more familiar emerald cut. Designers seeking a geometric outline with greater visual novelty than a rectangle but more structural regularity than a freeform or portrait cut frequently turn to the hexagon. The cut also pairs naturally with yellow gold settings that echo its angular geometry, and with bezel settings that protect the six corners while framing the stone's broad, reflective table.

Cutting Considerations and Yield

Fashioning a hexagon step cut from rough crystal requires careful pre-forming. The cutter first establishes the hexagonal girdle outline by grinding, then proceeds to cut the table and crown rows before inverting the stone to complete the pavilion. Maintaining equal edge lengths across all six sides — and consistent facet widths within each concentric row — demands precision at the pre-forming stage, since errors in the girdle geometry propagate through every subsequent facet tier. Custom-cut hexagon step cuts are therefore more labour-intensive than standard round or oval cuts of equivalent carat weight, and command a corresponding premium in the market for precision-cut coloured gemstones.

Yield from rough varies considerably depending on crystal habit. Beryl crystals, which grow naturally as hexagonal prisms, can yield hexagon step cuts with relatively modest material loss when the rough is suitably proportioned. Corundum and tourmaline crystals, which grow in different habits, may require more aggressive pre-forming and consequently lower yield percentages.

In the Trade

Hexagon step-cut gemstones are not routinely stocked by most wholesale dealers, who favour round, oval, cushion, and emerald-cut goods for their broader market appeal. Stones in this form are more commonly encountered as custom-cut pieces produced by specialist lapidaries, as vintage material from Art Deco-era jewellery, or as precision cuts from cutters in Germany, Thailand, and Sri Lanka who cater to the collector and bespoke jewellery market. When evaluating a hexagon step cut, buyers and gemmologists assess symmetry of the girdle outline, evenness of facet rows, quality of the corner breaks, and the relationship between cutting proportions and face-up colour — the same criteria that apply to emerald cuts and other step-cut forms, adapted to the six-sided geometry.