Three Stone Blue Sapphire Ring 4.05 Ct., 14K White Gold

This ring centers on a C.Dunaigre certified Blue sapphire of 4.05 carats, cut to a round outline with dimensions of 9.17 by 9.04 by 6.14 millimeters, presenting a mixed brilliant facet scheme that has been chosen to maximize both light return and color saturation. The sapphire is sourced from Ceylon, Sri Lanka, and exhibits intense color saturation with an eye clean clarity grade evaluated at eye level, and an excellent polish that refines facet junctions and minimizes surface diffusion of light. The measured depth at 6.14 millimeters relative to the average diameter produces a depth proportion of approximately 67.4 percent, a geometry that favors color depth without unduly trapping light. Corundum optical constants are relevant here, the refractive index near 1.765 and modest dispersion mean facet geometry and polish are primary levers for visual brilliance, and this stone has been cut and finished to exploit those levers, producing a vivid blue with lively internal reflection and balanced scintillation.

The mixed brilliant cut used in this sapphire combines a finely faceted brilliant style crown with a modified pavilion architecture that preserves weight while optimizing internal light paths. On the crown the smaller, well defined star and bezel facets flank a carefully proportioned table, which is sized to balance contrast and windowing so that light entering the table meets the pavilion geometry at angles that favor total internal reflection rather than leakage. The pavilion has been engineered with slightly steeper sectors than a typical step cut, producing multiple critical angles that redirect light back through the crown and table as flashes of brilliance and lively scintillation. Symmetry and facet junction precision are evident in the stone s polish grade, every facet plane meeting its neighbor with sharpness that enhances specular reflection. The result is a stone that displays both broad flashes of saturated blue and pinpoint scintillation, a dynamic that is particularly valuable in sapphires where dispersion is modest, because well executed facet architecture becomes the dominant contributor to perceived brilliance.

Complementing the central sapphire, the ring features white round shaped lab grown diamonds with a total weight of approximately 0.44 carats, graded Very Slightly Included, with clarities in the VS1 and VS2 range, and a color grade of F. These side stones are selected and matched for both optical performance and colour balance, their high white color grade creating a crisp, cool contrast that enhances the sapphire s blue intensity by comparison. The diamonds are cut to maximize return and scintillation with tight facet symmetry, and their placement adjacent to the sapphire has been designed to act as bright focal points that draw the eye to and through the center stone, rather than distract from it. The mounting is executed in platinum 950, a metal with high density and low reflectance at the table level, chosen to support secure prong work while maintaining a neutral, bright backdrop that accentuates the sapphire s hue. The four prong setting secures the sapphire while keeping the pavilion exposed to light from below, and precise prong geometry minimizes shadow while protecting the girdle. The overall craftsmanship by The Natural Sapphire Company emphasizes facet integrity, bezel clearance and gallery workmanship so that light is admitted, redirected and returned with maximum efficiency, producing the vivid face up color and lively brilliance that knowledgeable collectors and connoisseurs seek.