3.54 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This sapphire is a GIA certified, natural Ceylon blue sapphire, weighing 3.54 carats, oval in outline, with dimensions of 10.28 by 6.69 by 5.36 millimeters, a mixed brilliant cut, and an eye clean clarity grade when examined at standard viewing distance. The stone exhibits a dark color intensity, a transparency described as transparent in gemological terms, an excellent polish, and no enhancement. The mixed brilliant cutting style indicates a cutter intent on maximizing internal light return and scintillation on the crown while managing pavilion geometry to preserve weight and achieve desirable face up spread. The GIA report confirms natural origin and treatment status, an important provenance factor for collectors and for long term value retention, and it positions this sapphire as a premium material for precision jewelry work, supplied by The Natural Sapphire Company.

Optical and proportional analysis supports this sapphire as an adaptable design choice. The measured depth of 5.36 millimeters relative to the average diameter of 8.485 millimeters yields a depth percentage of approximately 63 percent, a proportion that balances crown height and pavilion depth to promote strong return of blue hue and lively facet contrast. The mixed brilliant faceting scheme produces a complex interplay of small star and kite facets on the crown with larger pavilion facets, creating both broad flashes of deep blue and fine scintillation under point illumination. The excellent polish minimizes surface scattering and enables saturated blue to read cleanly across the table, while the eye clean clarity permits open settings with minimal risk of visible inclusions under typical magnification. The dark color intensity will appear more velvety in closed back settings and more vivid in open backed and halo mounted designs, giving designers a predictable palette to work with.

From a setting and customization perspective, this oval mixed brilliant sapphire offers broad compatibility across classical and contemporary mountings, with specific technical considerations derived from its proportions and hardness. For engagement ring profiles, four or six prong configurations can be employed, placing longer prongs at the oval tips to control stress concentration, or choosing a six prong layout for enhanced retention in active wear designs. Bezel settings provide maximum protection to the girdle and reduce risk of chips, and a partial bezel or low bezel with an open gallery can preserve light entry to maintain face up brightness. Halo settings with calibrated melee increase apparent table size and enhance perceived saturation through reflected light, while a pavé shoulder or tapered shank optimizes visual transition from center stone to metal. Tension settings are technically feasible due to corundum hardness and the stone s robust pavilion, however they require precise girdle symmetry and a confirmed girdle thickness to ensure the compressive forces are evenly distributed. For pendants and earrings, using a closed back for evening oriented pieces will deepen the blue, while an open back in daytime oriented earrings will allow more light through the pavilion and present a brighter face up appearance.

Craftsmanship options and metal pairings will significantly affect the final visual outcome and long term performance, and The Natural Sapphire Company can collaborate on detailed technical choices. For maximum color contrast, platinum or palladium settings provide a neutral cool field that emphasizes blue saturation, while 18 karat yellow gold introduces a warm contrast that can visually lighten the stone and add classic warmth. Technical finishing choices such as low crown seating to reduce snagging, micro bezel rims for a contemporary aesthetic, and closed or open galleries to control light leakage are all available and should be specified with reference to the measured depth and girdle plan. For bespoke commissions The Natural Sapphire Company provides CAD renders and physical wax proofs to evaluate prong orientation, bezel wall thickness, and the relationship between table plane and finger ergonomics, ensuring proper seat depth and secure retention without compromising optical performance. The combination of GIA certification, no enhancement, and a balanced mixed brilliant proportion makes this 3.54 carat Sri Lankan oval sapphire a highly versatile centerpiece for a wide range of custom jewelry, from heirloom engagement rings to statement pendants and refined pairings, and we invite you to consult with The Natural Sapphire Company for technical design guidance and bespoke mounting options.