0.86 Ct. Bi Color Sapphire from Ceylon (Sri Lanka)

One transparent 0.86 carat oval bi color sapphire, with dimensions of 6.13 by 4.89 by 3.49 millimeters, presents as a compact gem with well controlled proportions, origin Ceylon Sri Lanka, enhancement heat treated, clarity graded as very, very slightly included evaluated at eye level, intense color intensity, and an excellent polish. The oval outline is classic and efficient, the length to width ratio favoring an elegant silhouette, while the measured depth relative to the average diameter yields a gem body depth of about sixty three percent, a proportion that balances depth of color with optimal light return. This crystal clear transparency allows the cut architecture and the bi color zoning to be read easily across the stone, the mixed brilliant faceting producing strong internal reflections, and the excellent surface finish ensuring that each facet junction remains crisp under magnification. The Natural Sapphire Company histories this sapphire as a Sri Lankan origin gem, a provenance that is consistent with the bright, saturated tones that collectors associate with Ceylon material.

The cutting style on this oval is a mixed brilliant, a deliberate faceting strategy that marries a brilliant style crown with a combined pavilion schema to extract both scintillation and color. The crown facets are arranged to act as a dispersive window, breaking incident light into a pattern of bright flashes and scintillation across the table and near the girdle, while the pavilion facets are organized to manage light leakage and reinforce color saturation through controlled internal reflections. The faceter preserved a well defined girdle plane and a symmetrical outline, which is important when orienting the stone in a setting to exploit the bi color character. The facet junctions and facet symmetry contribute directly to the perceptible brilliance and to the evenness of light return across the oval, and the excellent polish minimizes surface diffusion of light, maintaining crisp, high contrast flash and strong contrast between the blue and yellow green color zones.

Chromatic character is the defining attribute of this sapphire, the stone exhibiting a pronounced bi color distribution that shifts between deep blue and a vivid yellow green depending on viewing angle and light source. The color intensity is classified as intense, which in practical terms means strong saturation without being oversaturated, allowing the sapphire to read boldly at a small size while preserving subtle secondary tones. Pleochroic behavior is evident when rotating the gem, the trichroic sapphire showing different absorption along different crystallographic axes, and the cutter oriented the stone to create a visually compelling separation of hue that can be used as a design element. This dynamic interplay of blue and yellow green manifests as a rich, bold color, and for the discerning wearer it functions as a visual language, a symbol of personal power and distinction that reads as both modern and timeless. The gem reads differently in cool daylight and in warm incandescent lighting, the blue becoming more dominant in certain viewing geometries while the yellow green can assert itself under other light angles, creating a living surface that responds to movement.

Clarity characteristics are minimal, the very, very slightly included grade evaluated at eye level indicating inclusions that are minor and unobtrusive to the naked eye, yet visible under moderate magnification, an important distinction for buyers assessing durability and appearance. These internal features do not compromise structural integrity, and the gem displays excellent transparency and light transmission. The stone has been heat treated, a standard and stable enhancement for sapphires, applied to optimize hue uniformity and to reduce overly gray or brown modifiers that can occur in rough material. Heat treatment on Ceylon sapphires is a well understood, permanent intervention, and full disclosure is provided, with The Natural Sapphire Company committed to transparency regarding treatments and origin. The Sri Lankan origin is relevant here because it informs the expected hue range and crystal chemistry, and collectors familiar with Ceylon material will recognize the tendency toward bright, lively tones and a favorable response to skilled cutting.

For setting and design the small but intensely colored 0.86 carat oval offers versatility, functioning effectively in a minimalist solitaire, a low profile daily wear ring, or a bespoke design that deliberately exploits the bi color axis. Because the stone presents distinct color zones, the preferred mountings are those that allow the pavilion to remain open so that light can enter and interact with the faceting plan, prong settings with a discreet open gallery or custom bezels with a pierced seat being two viable approaches. Orientation within the setting will determine which hue dominates in face up view, an important consideration for clients who wish to emphasize either the deep blue or the vivid yellow green, and the cutter s choice of mixed brilliant faceting ensures lively scintillation even at this compact size. The Natural Sapphire Company can advise on mounting orientations and design choices to leverage the stone s natural dichroic character, the result being a wearable object that communicates refinement, personal power, and distinction through its rich, bold color.