1.12 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This 1.12 carat cushion shape blue sapphire presents precise proportions and refined finishing, with measurements of 5.54 by 5.50 by 4.28 millimeters, a mixed brilliant cut, and an excellent polish. The stone exhibits vivid color intensity, a level of saturation and tone that reads as a deep, pure blue across multiple viewing angles. Clarity is graded as very slightly included when evaluated at eye level, a grade that conveys transparency with modest natural features which do not dominate the gem. The sapphire is heat treated, a stable and widely accepted enhancement that improves hue and clarity, and it is from Ceylon, Sri Lanka, a provenance renowned for producing sapphires with lively blue hues and characteristic internal textures. The Natural Sapphire Company documents these attributes as part of our standard grading and imagery process, enabling precise assessment before setting.

The internal architecture of this sapphire contains a combination of fine rutile silk, pinpoint mineral crystals, and subtle healed fissures, inclusions that together create an unmistakable internal signature. The very fine rutile silk is dispersed in delicate, thread like arrays that soften light transmission and produce a velvety depth to the blue, enhancing perceived saturation without obscuring brilliance. Minute pinpoint crystals occur sparingly, acting as tiny focal points that flash and scintillate as the gem moves, while occasional tiny negative crystal cavities and healed growth features create micro windows that contribute to internal contrast. Growth zoning is present in gentle, feathered bands rather than stark sectors, producing faint shifts from cornflower to deeper royal blue when the stone is tilted. These combined features are typical of corundum formed under dynamic conditions in Ceylon deposits, and they are consistent with natural origin, while remaining subtle enough to preserve the gem’s transparent, lively appearance.

The interaction between the mixed brilliant facet structure and the stone’s inclusions is an important aspect of its visual character. The mixed brilliant cut places larger pavilion facets alongside smaller crown facets, a combination that both returns light efficiently and distributes the internal textures in a pleasing manner, so that the silk and tiny crystals contribute to an even, velvety glow rather than a concentrated dark spot. The excellent polish ensures that light meets the facet planes cleanly, minimizing any surface disturbance to the view into the interior. For practical wear, the gem’s cushion outline and nearly square dimensions provide visual stability and adaptability to a variety of mounting styles, while the modest presence of very slight inclusions means routine settings will adequately protect the stone without necessitating overly conservative designs. In a well executed prong or bezel mount, the sapphire will present its vivid color and internal signature consistently on the hand.

From a gemological and consumer perspective, the inclusions present in this Ceylon sapphire are best understood as natural identifiers that add to, rather than detract from, the gem’s character. The fine rutile silk contributes to the classic Ceylon sapphire appearance of luminous depth, the pinpoint crystals and healed features supply points of internal interest and sparkle, and the gentle color zoning and pleochroic response allow the viewer to experience a range of blue tones in different lights. Heat treatment in this case enhances the uniformity and intensity of the blue while leaving the stone’s natural textural fingerprint intact. The Natural Sapphire Company provides high resolution imagery and transparent grading notes for this sapphire to assist in evaluation, and we recommend examination under natural and standard lighting conditions to appreciate the interplay of inclusions, cut, and color that defines this stone. For customers seeking a sapphire with both technical quality and a distinct natural signature, this gem represents a balanced combination of vivid color, precise cutting, and the subtle internal characteristics that make each natural sapphire unique.