2.70 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This parcel presents a single transparent 2.70 carat round blue sapphire, with measured dimensions of 8.67 by 8.52 by 4.97 millimeters, cut in a mixed brilliant configuration. The proportions yield an average diameter that supports a measured depth of approximately 58 percent, a dimension that sits well within the range that promotes both favorable face up spread and efficient light return. The round outline has been executed with careful attention to symmetry, and the slightly off perfect diameter balance is imperceptible to the naked eye yet contributes to a natural, lively presentation on the finger. The mixed brilliant cut combines a precisely faceted crown with a modified pavilion structure, creating a balance between scintillation and color saturation that is particularly advantageous for corundum, where controlled path lengths within the stone influence apparent hue and intensity.

From a cutting engineering perspective the mixed brilliant style on this sapphire optimizes the interaction between crown facets, table area, and pavilion architecture to enhance both brilliance and color depth. The crown facets act as primary refractive entry planes, breaking incoming light into discrete rays that the pavilion facets are tasked with returning to the viewer. The modified pavilion in a mixed cut typically introduces additional facets below the girdle that reorient light paths, reducing leakage through the pavilion and increasing internal reflection. With a depth near fifty eight percent the pavilion angles and crown heights appear calibrated to favor light return rather than excessive dispersion, producing compact, high contrast scintillation under direct lighting, and broad, saturated flashes in diffuse illumination. The facet junctions are sharp and well aligned, and this optical precision reduces light leakage at facet boundaries, so the viewer experiences crisp pinpoints of white sparkle alongside larger blue flashes, a combination that reads as lively brilliance without sacrificing the gem to excessive windowing or dark areas.

Color performance in this sapphire is a defining attribute, described here as intense in color intensity, with a vivid, saturated blue that remains true across viewing orientations. Origin information from Ceylon, Sri Lanka, provides context for the cornflower to medium vivid blue tones that Sri Lankan material typically exhibits, and the mixed brilliant cut has been used to exploit those color tendencies by lengthening effective light paths where desired, thereby increasing perceived saturation. The stone is transparent, allowing internal light travel that reinforces both saturation and brightness. Clarity is graded as very slightly included when evaluated at eye level, meaning that the stone retains excellent visual purity for wearable use, while very small inclusions can act beneficially as additional light scatterers at micro scale, enriching scintillation without detracting from transparency. The sapphire has undergone customary heat treatment, a standard and stable enhancement that reduces silk and enhances color uniformity, and this treatment integrates with the cutting strategy so that heat induced color zoning has been minimized by facet placement and orientation.

Surface finish and practical jewelry considerations complete the technical picture, the polish is excellent, producing mirror like facet surfaces that maximize specular reflection and allow the cut geometry to function as intended. The high quality polish reduces micro abrasion that would otherwise soften facet edges and degrade optical performance, so the mixed brilliant design retains lively contrast and persistent sparkle in everyday wear. For mounting, a four or six prong setting that elevates the girdle slightly above the mounting plane will allow light to enter unobstructed, while a low bezel can preserve more color saturation for those seeking an intense, velvety blue face up. When set in white metals the color will read slightly cooler and more electric, while warmer yellow metals will bring out the stone's deeper blue tones. This sapphire is presented by The Natural Sapphire Company, and it is recommended for collectors and connoisseurs who prioritize a precise combination of cut engineering, intense natural color, and durable enhancements.