The epaulette cut is a flat-topped, trapezoid or shield-shaped faceted gemstone form designed principally as a side stone, deployed in flanking pairs to frame a centre gem in three-stone and multi-stone jewellery compositions. Its silhouette — broader at the outer shoulder, tapering inward toward the centre stone — recalls the braided shoulder ornament from which it takes its name. The cut is most commonly executed in either step-cut or modified brilliant faceting, and its clean, geometric outline makes it a natural companion to emerald-cut, radiant, and cushion centre stones. Though it appears with particular frequency in Art Deco jewellery and in contemporary architectural ring designs, the epaulette cut has maintained a quiet, specialist presence across much of the twentieth and twenty-first centuries.

Geometry and Faceting

The defining characteristic of the epaulette cut is its asymmetric trapezoid plan: one long, straight edge (typically the inner edge, set closest to the centre stone), two angled sides that converge toward that inner edge, and a broader outer edge that forms the "shoulder" of the composition. The result is a wedge-like form that, when set in a pair, creates a seamless visual transition from the centre stone outward, broadening the apparent width of the ring and lending it a structured, almost architectural quality.

In step-cut execution — the more traditional approach — the crown and pavilion are divided into concentric rows of rectangular or trapezoidal facets running parallel to the girdle outline. This produces the characteristic hall-of-mirrors optical effect associated with emerald cuts and baguettes, emphasising clarity and colour saturation over brilliance. Modified brilliant versions introduce triangular or kite-shaped facets to increase light return, making them better suited to stones of moderate clarity or to settings where sparkle is prioritised over the cool, glassy elegance of the step-cut style.

The proportions of an epaulette cut are necessarily customised to the centre stone it accompanies: the inner edge length must align precisely with the width of the centre gem's girdle at the point of contact, and the taper angle is adjusted to suit the overall ring design. This bespoke quality means epaulette cuts are rarely produced as off-the-shelf calibrated goods in the way that standard baguettes or rounds are; they are more often cut to order by specialist lapidaries.

Relationship to Related Cuts

The epaulette cut belongs to a broader family of geometric side-stone cuts that includes the shield cut, the kite cut, the tapered baguette, and the half-moon (or demi-lune). It is most closely related to the shield and kite cuts, all three sharing a non-rectangular, angled outline that distinguishes them from the straight-sided baguette. The distinction between an epaulette and a shield cut is largely one of proportion and intended use: shield cuts tend toward a more symmetrical, pointed form suitable for use as independent accent stones or in cluster settings, while the epaulette is specifically proportioned for flanking duty, with its flat inner edge engineered to sit flush against a centre stone's girdle. The kite cut, by contrast, is a rhombus-like form with four pointed corners, used in similar side-stone contexts but producing a sharper, more angular silhouette.

Historical Context

The geometric precision of the epaulette cut aligns it closely with the aesthetic values of the Art Deco period (roughly 1920–1940), during which Parisian jewellers and their international counterparts pursued rectilinear, architecturally inspired compositions that demanded equally disciplined stone shapes. The proliferation of step-cut diamonds and coloured stones in this era — baguettes, carré cuts, trapezoids, and their variants — created the design vocabulary within which the epaulette cut found its natural home. Maisons such as Cartier, Van Cleef and Arpels, and Boucheron produced three-stone and multi-stone pieces during this period in which tapered trapezoid side stones, functionally equivalent to what the trade now calls epaulette cuts, were essential compositional elements.

The term "epaulette cut" itself, as a discrete trade designation, became more consistently used in the latter decades of the twentieth century, as the jewellery industry developed more precise shared vocabulary for fancy and modified cuts. Prior to this standardisation, such stones were often described simply as "trapezoid" or "tapered" side stones, with the epaulette designation emerging as a way to distinguish the specific proportions and intended pairing function of the form.

Gemstones Commonly Cut in the Epaulette Form

Because epaulette cuts are side stones by design, they are most often cut from material that is abundant enough to yield matched pairs of consistent colour and clarity. Diamond is the most common material, particularly in white or near-colourless goods where the step-cut faceting produces a clean, transparent window that complements a diamond centre stone without competing with it. Coloured gemstones — sapphire, ruby, emerald, and aquamarine among them — are also cut in the epaulette form when a three-stone design calls for coloured side stones, though matching pairs of sufficient quality require careful selection from parcels.

The step-cut faceting style places particular demands on clarity: the large, open facets of a step-cut epaulette offer little concealment for inclusions, and stones intended for this cut are therefore selected for high transparency. In coloured stones, the broad, flat table also means that colour zoning or uneven saturation will be readily visible, making uniform colour distribution an important criterion in material selection.

Setting and Design Considerations

Epaulette cuts are almost invariably set in bezel, channel, or claw settings that follow the outline of the stone precisely, reinforcing the geometric character of the cut. In three-stone rings, the inner straight edge of each epaulette is set flush against the girdle of the centre stone, creating a continuous horizontal line that visually widens the composition. The outer shoulder of the epaulette is typically aligned with or slightly inside the outer edge of the centre stone's setting, maintaining proportional balance.

Contemporary designers have revisited the epaulette cut as part of a broader renewed interest in geometric and architectural jewellery, often pairing epaulette-cut diamonds or sapphires with emerald-cut or radiant-cut centre stones in platinum or white gold settings that echo the restrained elegance of the Art Deco period. The cut also appears in more experimental contexts — as accent stones in ear cuffs, as elements in mosaic-style pavé compositions, and occasionally as the primary stone in a minimalist solitaire setting where its unusual silhouette is the design's central statement.

Trade Notes

Because epaulette cuts are produced to bespoke dimensions rather than standard calibrations, they are typically sourced through specialist cutters or commissioned directly from lapidary workshops. Pricing is governed by the same criteria as other fancy cuts — carat weight, colour, clarity, and cutting quality — with a premium applied for well-matched pairs. The precision required to cut a true epaulette, with a flat inner edge that aligns exactly with the intended centre stone and consistent taper angles across both members of a pair, demands a skilled lapidary and is reflected in the cutting cost relative to standard baguettes or rounds of equivalent weight.