2.43 Ct. Greenish Blue Sapphire from Africa

This specimen is a transparent 2.43 carat round greenish blue sapphire from Africa, presented by The Natural Sapphire Company, with dimensions 7.87 x 7.52 x 4.80 mm, a mixed brilliant cut, and an excellent polish. The combination of weight and diameter produces a compact round outline that reads as both substantial and wearable, with a measured depth that supports both light return and color saturation. The mixed brilliant architecture integrates a brilliant style crown with a modified pavilion geometry, creating a controlled interplay between scintillation and body color. The stone is natural and untreated, no enhancement, and clarity is assessed as slightly included at eye level, which is consistent with professional trade grading for transparent stones of this type.

The geometric faceting strategy employed here is deliberate, designed to maximize light play while preserving intense color. The crown retains the traditional brilliant facet pattern, with a faceted table, star facets, and main crown facets that act as precision mirrors to admit and refract incident light. The pavilion adopts a mixed arrangement that deepens the optical path length within the corundum, concentrating light back through the crown facets and reinforcing both brilliance and color depth. The overall depth is approximately 62 percent of the average diameter, a proportion that balances internal reflection with color saturation, creating a lively return of white flashes coupled with deep blue green flashes under directional lighting. Facet junctions are executed to tight tolerances, and the symmetry of facet placement ensures predictable light performance from multiple viewing angles.

Color characterization is central to the appeal of this sapphire, with a dominant greenish blue hue and an intense color intensity designation. The mixed cut enhances this hue by increasing the effective path length of light through the body of the stone, which intensifies saturation without sacrificing brightness. The gem exhibits controlled pleochroic behavior, presenting cooler blue tones and warmer green tones depending on the angle of observation and the lighting environment, which is typical for greenish blue sapphires. Because the material is untreated, the hue and saturation are intrinsic to the crystal chemistry and natural trace element distribution, which is a key point for connoisseurs who value natural color expression. The excellent polish amplifies the color interface between the crown and the table, maintaining sharp facet edges and minimizing surface diffusion that would otherwise mute the color and sparkle.

Clarity considerations and finishing details complete the technical profile of this sapphire. The slightly included clarity grade means there are natural inclusions visible at eye level under careful inspection, yet the stone remains effectively transparent, and the inclusions do not materially disrupt the geometric light paths created by the cutting plan. The polish is graded excellent, producing smooth, reflective facet planes that yield crisp scintillation and high contrast between flashes. The girdle and culet have been managed to provide secure setting options without compromising optical performance, and the round outline and centering support a wide range of mounting styles. For use in jewelry where maximum brilliance and color are desired, settings that allow light to reach the pavilion, such as open prong or low bezel configurations, will take full advantage of the mixed brilliant cut geometry. This fine 2.43 carat greenish blue round sapphire, offered by The Natural Sapphire Company, is an excellent choice for a collector or designer seeking a technically precise, visually dynamic untreated sapphire with pronounced color and engineered light play.