44.32 Ct. Bluish Grey Star Sapphire from Ceylon (Sri Lanka)

This gemstone is a transparent oval shape bluish grey star sapphire weighing 44.32 carats, and it measures 19.07 x 17.18 x 13.37 mm. The piece is fashioned as a cabochon, exhibiting the smooth domed profile characteristic of star sapphires, and it carries a clarity grade of very slightly included as evaluated at eye level. Color is assessed as medium in intensity, presenting a restrained bluish grey hue that reads as both versatile and distinct in subdued lighting. The surface finish is described as excellent polish, delivering a clean, reflective plane across the dome, and the stone has received no enhancement. The sapphire is sourced from Ceylon Sri Lanka, and it is offered with documentation and provenance maintained by The Natural Sapphire Company.

Although traditionally cabochon cut rather than faceted, the stone benefits from a carefully controlled geometric approach to the dome shape and symmetry which functions as a form of faceting in practical effect. The dome has been calibrated in curvature and profile to create defined planes of reflection, and the underlying crystal orientation has been aligned to encourage coherent light paths through the corundum. This geometric shaping concentrates incident light into narrow, repeatable zones that enhance asterism and internal reflection, translating to pronounced light play when the stone is viewed under focused illumination. The result is a star effect that appears centered and stable, with the polished geometry maximizing contrast between the star and the body color, and allowing the optical phenomenon to travel cleanly across the surface as the viewing angle changes.

The stone’s transparency and its very slightly included clarity grade work in concert with the geometric dome to produce controlled light transmission and scattering. Inclusions that give rise to the asterism are internal, oriented silk structures that act as optical reflectors, and because they are subtle at eye level they do not materially detract from the gem’s overall clarity. The medium color intensity supports a balance between depth and brightness, permitting the star to remain visible without overwhelming the stone with saturation. The excellent polish further contributes to the optical performance, minimizing surface diffusion and maintaining crispness in the star’s rays. With no enhancements applied, the stone presents an authentic example of natural asterism and optical structure as formed and preserved in its original geological environment.

From a provenance and handling perspective this star sapphire reflects the standards of The Natural Sapphire Company in both selection and preparation. The Ceylon origin is consistent with a history of fine sapphires exhibiting soft, nuanced color and good asterism, and the dimensions and substantial carat weight make this an uncommon specimen suited to a variety of settings that respect its optical character. When mounted, care should be taken to orient the dome so the star aligns as desired in the intended viewing position, and settings that allow light to penetrate and move across the dome will best reveal the geometric light play engineered into the cut. The combination of the calibrated dome geometry, very slightly included clarity, medium color intensity, excellent polish, absence of enhancement, and Ceylon origin make this 44.32 carat oval star sapphire a technically well-defined and naturally expressive gemstone, presented and documented by The Natural Sapphire Company.