1.04 Ct. Purplish Blue Sapphire from Ceylon (Sri Lanka)

One transparent 1.04 carat oval purplish blue sapphire from Ceylon is presented with precise proportions and a faceted mixed brilliant cutting style, measurements 6.65 x 5.04 x 3.70 mm, clarity graded as very slightly included evaluated at eye level, vivid color intensity, excellent polish, and enhancement by heat treatment. The combination of a classic oval outline with a mixed brilliant faceting scheme produces a gemstone that reads strongly face up while retaining depth of tone, and the Sri Lankan origin contributes to a characteristic purplish blue hue that sits squarely within the vivid intensity category. The recorded dimensions yield an overall depth that is approximately 63 percent of the average of length and width, a proportion chosen to balance color saturation and light return, and the overall finish meets the exacting standards used by The Natural Sapphire Company for inventory destined for fine jewelry.

The mixed brilliant design employed in this sapphire leverages a brilliant style crown paired with a pavilion geometry tailored to the refractive properties of corundum, refractive index approximately 1.76, and a critical angle that necessitates carefully selected facet angles to optimize internal reflection. On the crown, multiple well graduated bezel and star facets create micro mirrors that break incident light into scintillating flashes, while on the pavilion a series of strategically angled facets guides light back through the crown and table rather than allowing it to leak through the girdle. The cutter has used the oval geometry to advantage, elongating the facet pattern along the long axis so that the return of light is more uniform across the table, and by controlling the pavilion slope relative to the crown angle the stone maintains a strong balance between brilliance and lively color. The deeper proportional depth emphasises the purplish blue saturation by increasing the optical path length within the stone, so photons interact longer with the trace elements that create color, while the mixed brilliant mapping ensures those photons still encounter reflective facet planes that return light to the viewer rather than escaping as leakage.

Clarity and polish are integral to the way this sapphire modulates light, and the very slightly included grade evaluated at eye level indicates that inclusions are present but limited in size and distribution so as not to obstruct major light paths. With excellent polish, facet junctions are crisp and facet planes are smooth, reducing diffusion and scatter so that light reflections remain sharp and coherent. This precise surface finish allows the mixed brilliant facet arrangement to produce defined flashes of white light for brilliance and colored flashes for fire and scintillation, and because the inclusions are subtle the stone retains strong transparency and contrast. Heat treatment, a stable and widely accepted enhancement method for sapphires, has been applied to optimize the purplish blue tone and to reduce the visibility of any minute silk or veil inclusions, resulting in improved tone uniformity and stronger face up color while preserving the crystal lattice and the stone stability required for daily wear.

When set in a ring or other jewelry, the oval mixed brilliant layout of this sapphire interacts predictably with mounting choices, and the cutting choices made by the lapidary are designed to maximize light reflection in typical domestic lighting and under brighter display illumination. Orienting the long axis of the oval along the finger produces a visually lengthening effect and allows the table and crown facets to intercept light across a broad angular range, enhancing the perception of depth and liveliness. The combination of vivid purplish blue color, carefully controlled depth, mixed brilliant faceting, minimal inclusions at eye level, and superior polish makes this 1.04 carat Ceylon sapphire an excellent candidate for secure prong or bezel settings that expose the crown and allow optimal light ingress. At The Natural Sapphire Company we examine each detail from pavilion angle to table symmetry to ensure that the cutter intent and the gem material are aligned, and we stand ready to advise on mounting, pairings with accent stones and metals, and any custom work required to showcase the engineering of light reflection inherent to this stone.