1.75 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent 1.75 carat oval blue sapphire from Ceylon Sri Lanka measures 9.02 x 6.90 x 3.60 mm, and it has been precisely fashioned into a mixed brilliant cut, offering a balanced silhouette with optimized light performance. The stone exhibits light color intensity, calibrated to present a delicate yet discernible cornflower blue hue, and is graded as very very slightly included at eye level, indicating the presence of only minor internal features that do not impede face up appearance. The pavilion and crown demonstrate excellent symmetry, the polish is excellent, and the gem is natural with no enhancement, attributes that together confirm the gemological integrity that collectors and connoisseurs expect from The Natural Sapphire Company. The oval outline emphasizes length to width proportion while the mixed brilliant faceting scheme increases apparent diameter and preserves weight, delivering an elegant footprint for bespoke settings that require both presence and refinement.

At the microscopic and structural level, the sparkle of this sapphire is a function of its corundum crystal lattice, its refractive indices, and the cutter applied geometry, rather than a single visual attribute. Corundum is anisotropic, and pleochroism in blue sapphires manifests as subtle shifts between blue and violet blue tones when viewed from different orientations, a characteristic that our mixed brilliant faceting accentuates by orienting the table and pavilion to favor the strongest color axis. The mixed brilliant cut used here combines a brilliant styled crown with a modified pavilion architecture, the crown facets generating multiple small facet junctions for intense scintillation, while the pavilion planes act as controlled mirrors that return light through the table, enhancing brightness. The crown angle proportions are selected to balance dispersion and brightness, reducing destructive leakage and minimizing light extinction across the oval silhouette. The result is a dynamic interplay of pinpoint highlights and broad flashes, a finely tuned balance of brilliance, scintillation, and color that reads as an unusually lively sparkle when compared with conventionally cut sapphires.

From a craftsmanship perspective, the cutter has negotiated the natural growth zoning and internal character with precision, orienting facet junctions to mitigate the visibility of inclusions and to harmonize color distribution, an approach that requires both gemological understanding and lapidary skill. The excellent polish ensures that facet surfaces act as efficient optical planes, maximizing internal reflection and preserving contrast between bright and dark areas, while the careful symmetry of the oval girdle maintains even light return across the length of the stone. For setting considerations, the 3.60 mm depth yields a favorable table to depth ratio for face up brightness, and the oval proportion makes this sapphire suitable for classic solitaire rings, three stone compositions, or bespoke halo designs where the mixed brilliant cut can interact with surrounding melee to produce compounded scintillation. As with every gem curated by The Natural Sapphire Company, this sapphire is presented with transparent technical documentation focusing on cut, clarity, color, and provenance, ensuring that a technically minded buyer can assess optical performance, structural qualities, and long term value with confidence.