5.44 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent C.Dunaigre certified Blue sapphire from Ceylon presents as a 5.44 carat radiant shape gem, with precise dimensions of 10.42 x 8.98 x 6.19 mm. The stone is fashioned in a radiant cut, exhibiting an excellent polish that allows clean facet junctions and bright surface reflections. Color is described as medium intense, delivering a clear and balanced blue that reads true to Sri Lankan origin under standard viewing conditions. Clarity is graded as slightly included when evaluated at eye level, and the piece has been heat treated, a standard and stable enhancement for sapphires. The accompanying certification and documentation from C.Dunaigre, together with provenance and imagery maintained by The Natural Sapphire Company, support the gemology of this sapphire and its Ceylon origin.

The inclusions within this sapphire are an integral part of its character and are immediately informative on close inspection. Fine silk like rutile needles are present in delicate networks and often align with natural growth zones, producing a subtle internal texture that softens and diffuses light. Small pinpoint crystals appear at a few internal sites, acting as bright pinpricks of reflection when illuminated. There are also minor feather like planes and narrow negative crystal spaces that show as slightly less refractive patches under magnification, contributing to the overall slightly included clarity grade at eye level. Growth zoning is perceptible in places, with faint banding and variations in blue saturation that follow the crystal architecture, and these patterns are typical of Ceylon sapphires which commonly display parallel growth features.

Together these internal features create an unmistakable signature that distinguishes this parcel of material from more uniformly clean sapphires. The radiant cut amplifies this signature by breaking light across numerous facets, so silk and pinpoints produce a lively interplay between soft velvety areas and crisp reflective flashes. Where silk threads intersect, the stone develops a gentle scattering of light that lends depth and a near three dimensionality to the blue. Pinpoints and small crystals translate into scintillating points of contrast that enliven the table and pavilion during movement. Growth zoning and variations in saturation offer layered color, which reads as complexity rather than inconsistency, and these subtleties are part of why origin specialists commonly associate such internal patterns with Ceylon sources. The result is a sapphire that reads as authentically natural, with internal traits that tell a geological story rather than attempting to conceal it.

From the perspective of setting, wear, and long term enjoyment, these inclusions are compatible with routine use when the sapphire is set thoughtfully. The feather like planes are internal and do not constitute surface reaching breaks, and the heat treatment undertaken historically on the stone improves transparency while remaining a permanent and stable enhancement. The radiant cut and excellent polish allow jewelers to orient the gem in a mounting that either showcases the internal silk for a softer appearance, or positions the table to emphasize the more reflective pinpoints for additional sparkle. The Natural Sapphire Company documents this stone with full gemological details and imagery, enabling confident design choices and responsible provenance. In summary, the inclusions present in this 5.44 carat Ceylon radiant blue sapphire are not flaws to be disguised, they are defining features that contribute to the stone's depth, optical personality, and verifiable origin, creating an unmistakable signature that is both natural and enduring.