5.60 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This is a single, transparent blue sapphire weighing 5.60 carats, presented in an elegant oval outline, with precise dimensions of 12.29 millimeters by 8.92 millimeters by 5.70 millimeters. The cutter has employed a mixed brilliant faceting scheme, combining a brilliant cut crown with a modified pavilion to maximize return and to enhance saturation across the table. Measured against the average diameter, which is approximately 10.61 millimeters, the pavilion and crown proportions produce a depth of approximately 53.7 percent, a range that balances face up size with optical performance. The stone exhibits an excellent polish, and faceting symmetry has been controlled to deliver clean facet junctions and consistent light return. Clarity is graded as very very slightly included at eye level, indicating only minimal, well confined internal characteristics that do not detract from the overall transparency or brilliance when viewed unaided. All of these parameters are documented and represented with the provenance attributed to Ceylon, Sri Lanka.

Color characteristics are a defining attribute of this sapphire, noted as vivid color intensity with a pure blue hue and a medium deep to deep tone that reads richly across varied lighting conditions. The mixed brilliant cutting strategy concentrates color toward the table, producing a uniformly saturated face up appearance without excessive darkening at the girdle. Facet geometry has been tuned to manage pleochroic behavior common to corundum, aligning pavilion facet angling to reduce windowing and to enhance the stone s perceived depth and velvety saturation. The vivid saturation and controlled tone create a stone that presents a deep, electric blue in daylight and a velvety, almost regal blue under incandescent lighting. Light performance is marked by lively scintillation from the brilliant crown reflectors, with architectural pavilion facets creating contrasting flashes that emphasize hue depth rather than dispersive whiting, preserving the stone s natural color. The excellent polish contributes to strong surface luster, and the clean facet transitions support crisp, well defined reflections that are desirable in high end collections.

This sapphire is unenhanced, with no treatments applied, a quality attribute of elevated rarity and collector appeal. Unheated Ceylon sapphires of this weight and clarity category are highly sought for their combination of natural color, transparency, and pedigree, factors that The Natural Sapphire Company vets carefully during procurement. For incorporation into a museum quality or bespoke collection, this 5.60 carat oval is ideal for a classic solitaire mounting to showcase the stone s face up color, or it can serve as the centerpiece of a refined three stone or halo commission where flank diamonds or sapphires will accentuate the vivid blue without overwhelming it. Given the stone s proportional depth and mixed brilliant geometry, prong settings that allow maximum light from the pavilion will optimize optical performance, while a low profile bezel could be used where durability is prioritized. Each facet and proportion of this gem reflects considered craftsmanship, and The Natural Sapphire Company provides detailed documentation and imaging to support authentication and future appraisal. For collectors who value provenance, unenhanced origin documented material, and meticulous cutting that prioritizes color saturation and clarity, this Ceylon oval sapphire represents a superb addition to a high end gemstone collection.