Chevron Setting
Chevron Setting
The V-prong solution for protecting pointed fancy cuts
A chevron setting — also called a V-prong — is a specialised form of prong setting in which one or more prongs terminate in a V-shaped notch rather than a rounded or claw tip. The notch cradles the pointed end of a gemstone, distributing mechanical stress away from the most structurally vulnerable part of the stone. The technique is considered best practice for marquise, pear, and heart-shaped cuts, all of which present acute points that are prone to chipping under the lateral impacts of daily wear.
Purpose and Mechanics
The geometry of a pointed fancy cut concentrates stress at its tip. A conventional rounded prong, sitting atop that point, can rock slightly under impact and transmit force directly to the culet area, risking fracture along a cleavage plane or a feather. The V-shaped notch of a chevron prong instead wraps around both facet edges flanking the point, effectively spreading any applied force across a broader surface and holding the stone laterally as well as vertically. The result is a mount that is simultaneously more secure and less likely to cause the very damage it is designed to prevent.
In a marquise setting, two chevron prongs are typically employed — one at each pointed end — while the remaining four to six prongs along the girdle are of conventional rounded or claw form. Pear shapes require a single chevron prong at the pointed culet end, with standard prongs securing the rounded lobe. Heart shapes, whose two upper lobes meet at a central cleft as well as terminating in a lower point, may use a chevron at the lower tip and occasionally a split or double prong at the cleft.
Construction and Materials
Chevron prongs are fabricated in the same metals as conventional prongs — platinum, white gold, yellow gold, and rose gold being the most common — and are typically cast or milled as part of the head assembly rather than added as a retrofit. Platinum is particularly favoured for V-prongs because its malleability allows the notch to be burnished tightly around the point without risk of cracking the metal, and its density provides durable long-term retention. White gold chevron prongs are common in commercial production, though they require periodic rhodium plating to maintain their appearance and should be inspected regularly for metal fatigue at the narrow walls of the V.
The depth and angle of the notch must be calibrated to the specific stone. A notch cut too shallow will not engage the point securely; one cut too deep risks thinning the prong walls to the point of fragility. Skilled bench jewellers typically fit the notch to the individual stone rather than relying solely on a standard casting.
Aesthetic Considerations
Beyond its protective function, the chevron prong offers a visual advantage: it frames the point of the stone cleanly, allowing the eye to follow the outline of the cut without interruption. A rounded prong sitting atop a marquise tip can visually blunt the elongated silhouette that is the cut's principal appeal. The V-prong, by contrast, integrates with the stone's geometry, preserving the perception of a sharp, uninterrupted outline. This aesthetic coherence has made the chevron setting the standard choice for marquise solitaires and three-stone rings where the marquise flanks a central round brilliant.
In the Trade
The International Gem Society and working bench jewellers consistently cite the chevron or V-prong as the appropriate setting choice whenever a pointed fancy cut is to be mounted in a ring intended for regular wear. Earrings and pendants, being subject to far less mechanical stress than rings, can sometimes accommodate rounded prongs on pointed stones without significant risk, but the chevron remains the prudent choice even in lower-wear contexts. When evaluating a pre-owned or estate piece set with a marquise or pear, the condition of the V-prongs is among the first details an appraiser or jeweller should inspect: worn or open chevron prongs are a leading cause of point chipping in fancy-cut stones.