1.77 Ct. Pinkish Purple Sapphire from Ceylon (Sri Lanka)

This gemstone is a transparent, radiant-shaped pinkish purple sapphire weighing 1.77 carats with precise dimensions of 6.80 by 5.88 by 4.64 millimeters. The cutting style is faceted with a radiant cut that combines step-cut and brilliant-cut elements to maximize both color and return of light. The stone exhibits intense color intensity and has been evaluated as slightly included at eye level, indicating minor internal features visible under close inspection but not significantly detracting from overall transparency. The polish is rated excellent, producing crisp facet junctions and a smooth surface that enhances luster. The stone originates from Ceylon, Sri Lanka, and has undergone standard heat treatment to stabilize and intensify its hue and clarity. The Natural Sapphire Company confirms these attributes and presents the gem as an example of Ceylonese color and craftsmanship in cutting.

The radiant cut architecture of this sapphire is an important factor in how it performs optically. The combination of a broad table, truncated corners, and a mix of large and small facets across the crown and pavilion creates a dynamic interaction with incident light. Corundum’s refractive index and modest birefringence produce a strong overall brilliance with limited but noticeable dispersion; this sapphire will throw flashes of lighter tone and occasional spectral sparkle when struck by focused light. The pinkish purple color is pleochroic, so observers can expect a subtle shift between pink and violet components as the stone or viewing angle changes. Slight inclusions, given the clarity grade, can act as additional internal light-scattering points; depending on their orientation these may soften brilliance in localized areas but will also contribute to character and depth when viewed in transmitted light. The excellent polish ensures surface reflections are sharp, preserving contrast between the bright facet highlights and the deeper body color.

Under direct sunlight the sapphire displays its most vivid behavior. Strong midday sun produces high contrast, bright facet flashes, and a pronounced play between pink and purple tones; the intense color will present as lively and saturated, while fine facet reflections create perceptible scintillation. In open shade or north-facing natural daylight the stone trends toward its cooler violet character, with color appearing more uniform and saturated across the table, and brilliance moderated by the softer, diffuse light. Under warm incandescent or halogen lighting the stone shifts toward the pinker end of the spectrum; warmth in the light source enhances magenta and salmon undertones, making the gem read as warmer and slightly more lively in face-up appearance. Cool white LEDs and fluorescent light sources emphasize the violet component and can produce a slightly more restrained, crystalline appearance with crisp facet reflections; these lighting types typically reduce warm overtones and bring out cooler hues and internal contrast. In lower ambient light and candlelight the sapphire’s overall tone will deepen, presenting a richer, more velvety body color with subdued sparkle, while transmitted lighting or backlighting reveals internal features, color zoning, and the presence of inclusions as it allows light to pass through the pavilion. The radiant cut’s facet arrangement supports attractive behavior across this range, balancing the desire for color saturation in softer, diffuse conditions and optical brilliance in stronger, directional illumination.

From a practical and aesthetics perspective the gem’s 6.80 by 5.88 millimeter dimensions and 1.77 carat weight make it suitable for a variety of settings where the balance of color and light return is important. The radiant cut provides secure corner points for a bezel or prong setting and presents a pleasing optical table for solitaire or halo arrangements, enabling the pinkish purple hues to appear consistent from multiple viewing angles. The hardness and toughness of corundum mean the stone will retain its polish and resist daily wear when set and cared for appropriately, and the heat treatment applied is a stable, accepted enhancement that improves tone and clarity without compromising structural integrity. Slight inclusions are typical for natural material and contribute to identification and provenance; they do not materially impair the gem’s ability to display intense, attractive color under the range of lighting conditions described. The Natural Sapphire Company documents the stone’s origin and treatment and can provide further optical and gemological details on request, offering a factual presentation of how this Ceylon sapphire will look and perform when viewed in different lighting environments.