Three Stone Blue Sapphire Ring 3.99 Ct., 18K White Gold

This ring centers a GIA certified Blue 3.99 carat cushion shape sapphire from Ceylon Sri Lanka, precisely measuring 11.58 x 7.34 x 4.81 mm, cut in a mixed brilliant configuration to optimize both color saturation and light return. The mixed brilliant layout integrates a modified cushion outline with a brilliant facet scheme on the crown and a pavilion that balances step and brilliant facets, producing tight scintillation across the table and controlled light leakage through properly angled pavilion facets. The stone is evaluated as eye clean at typical viewing distance, with vivid color saturation and an excellent polish, indicating meticulous facet junctions and symmetry that reduce light scattering and promote deep, velvety blue flashes. The mounting is executed in 18K white gold, with structural prongs and a well proportioned gallery to support the pavilion angles while allowing maximum light entrance. Flanking the sapphire are white half moon shaped lab grown diamonds, totaling approximately 0.70 carats, graded Very Slightly Included, VS1 and VS2, with a color grade of F, selected to offer high white contrast and bright lateral flashes without overpowering the sapphire tone.

Compared to a traditional cushion cut that uses larger chunky facets or an old mine cushion that emphasizes broader flashes and more vintage heft, the mixed brilliant cushion in this ring yields finer scintillation and a more modern brilliance, while preserving the classic cushion silhouette. Against a round brilliant, which remains the benchmark for overall brilliance and dispersion, this mixed cushion produces slightly less total brilliance but superior color presentation for a saturated blue, because the facet geometry reduces white light dispersion in favor of concentrated color return. Versus step cuts such as emerald, which deliver pronounced hall of mirrors effects and strong color windowing, the mixed brilliant cushion minimizes windowing and maintains even color saturation across the face, a critical advantage for a vivid Ceylon sapphire. The half moon diamonds act as bright, high color sidelines, enhancing perceived brilliance by framing the center stone and reflecting white light into the sapphire pavilion. At The Natural Sapphire Company we calibrate pavilion depths, crown angles, and facet alignment to maximize spectral return for each sapphire, producing a ring that balances color intensity, scintillation, and overall light performance in a way that complements both the gemological character of the Ceylon sapphire and the architectural lines of the mount.