5.06 Ct. Yellow Sapphire from Ceylon (Sri Lanka)

This C.Dunaigre certified vivid yellow sapphire weighs 5.06 carats, and presents in a precise emerald cut, with finished dimensions of 10.46 x 8.85 x 5.47 millimeters. The cutting style is fully faceted, employing a traditional step cut geometry that emphasizes parallel facet planes on both the crown and pavilion. The measured depth relative to the average of length and width is approximately 56.7 percent, a proportional window that balances internal light return with the hallmark linear flash that emerald cut stones produce. Facet junctions are crisply aligned, and the pavilion step planes converge to create the hall of mirrors effect that is characteristic of expertly executed emerald cuts. The excellent polish on every facet ensures maximum contrast between the broad luminous planes and the subtle reflective banding, permitting controlled scintillation rather than the dispersed fire seen in brilliant cuts, which is especially desirable for showcasing saturated yellows.

Color is the dominant attribute of this stone, and it reads as vivid yellow with intense color intensity, a presentational grade that signals strong saturation combined with a medium to medium dark tone. The hue is pure yellow with negligible secondary modifiers, allowing the color to remain consistent under both daylight and warm artificial lighting. Clarity is graded as very very slightly included, evaluated at eye level, which in practical terms means minor inclusions are either not visible to the unaided eye or appear only as minute features that do not impact transparency or brilliance. Under magnification the inclusions are typical of corundum origin material and are discreetly positioned so as not to interrupt the optical windows created by the step facets. The enhancement history is heat treated, a stable and industry standard process that refines chromophore distribution and reduces silk without compromising structural integrity. Origin is Ceylon, Sri Lanka, a provenance that historically produces yellow sapphires with a luminous, velvety character, and the C.Dunaigre certification accompanies the stone to validate both origin and treatment.

The heritage of yellow sapphire use is long and multifaceted, and this example connects directly to those traditions. In Sri Lankan lapidary history, yellow corundum has been prized for both its color saturation and its durability, making it appropriate for signet and devotional objects as well as court jewelry. In Vedic and regional astrological systems, yellow sapphires have been used as planetary stones, mounted as talismans and set in rings to align with long standing cultural prescriptions. The emerald cut variant has also had traditional applications, as the step cut allows for a dignified, architectural presentation that complements engraved or heirloom settings. From a craft perspective, the step cut here respects those historical practices while employing modern lapidary tolerances to achieve geometric symmetry, controlled windowing, and a presentation that reads as both classical and contemporary.

For setting and design, the stone’s measurements and optical behavior recommend design choices that preserve its step cut geometry and maximize visual impact. A four to six prong mounting that secures each corner will protect the truncated corners typical of emerald cuts, while a low profile bezel with a fine inner lip can protect the girdle and maintain the stone’s rectangular silhouette. To enhance perceived size and brightness, a narrow halo of melee diamonds set with precise pavillion and crown alignment will create a light frame that complements the intense yellow without overpowering it. For clients seeking a more architectural expression, a channel set shoulder of polished metal can mirror the step planes and emphasize the stone’s linear reflections. As a trade reference, the 5.06 carat weight and the stone proportions typically present a perceived face up presence greater than the weight alone suggests, owing to the optimized depth and broad table planes.

The Natural Sapphire Company stands behind the technical attributes and provenance of this sapphire, and we can provide high resolution imaging under multiple light conditions, microscopic imagery to document clarity, as well as the full C.Dunaigre report on request. For collectors and connoisseurs who appreciate exacting lapidary technique, clear documentation, and a gemstone that seamlessly bridges historical significance and modern wearability, this vivid yellow emerald cut sapphire represents a distinguished choice. If you would like additional technical data, bespoke mounting proposals, or to arrange a personal viewing, I can assist with measurements, design options, and certification review to ensure the stone meets your exact specifications.