0.44 Ct. Greenish Blue Sapphire from Ceylon (Sri Lanka)

This 0.44 carat radiant shape greenish blue sapphire measures 4.96 x 3.96 x 2.62 mm, yielding a calculated depth of approximately 58.8 percent, a proportion that balances internal light return with face up intensity. The stone has been fashioned in a radiant cut, combining a modified brilliant crown with a step pavilion and trimmed corners, which produces a disciplined display of facet reflections and controlled scintillation. The facet junctions have been executed with attention to symmetry, and the excellent polish enhances microfacet contrast, permitting crisp light return from the crown facets and maintaining strong contrast between bright and dark facet areas. The relatively shallow pavilion depth for a rectangular radiant promotes a broad face up presence relative to its weight, making the stone appear visually larger in both solitaire and halo settings. Optical parameters for corundum are relevant here, with a refractive index in the expected range for sapphire, and low birefringence that supports uniform light transmission across the pavilion facets, minimizing unwanted doubling when viewed through the table.

Color is the principal character of this sapphire, described as greenish blue with intense color intensity, a saturation level that reads as lively and deep under standard daylight viewing conditions. The Ceylon origin contributes to the gem s characteristic hue profile, where chromium and iron concentrations produce a blue base with a perceptible green modifier, and regional crystallization conditions commonly yield even color distribution with occasional zones of subtle dichroism. The radiant cut enhances this color by dispersing light across a network of small brilliant facets in the crown, which emphasizes the vivid saturation without pushing the tone into overly dark territory. The gem has been heat treated, an accepted enhancement that stabilizes and intensifies the blue to green balance by reducing inclusional rutile and reorganizing trace element chemistry at the microscopic scale. Heat treatment in Ceylon sapphires often yields improved transparency and softened silk trails, and in this example the process has produced an intense face up color while preserving natural growth signatures.

Clarity is graded as very very slightly included when evaluated at eye level, and the internal features in this sapphire function as unique identifiers that add to its provenance and individuality. Under magnification one can observe a constellation of pinpoint crystals and fine silk needles intersecting growth zones, alongside a few healed feathers and microscopic platelet features, all of which attest to natural formation and the subsequent thermal history. These inclusions create a subtle internal texture that refracts and scatters light in characteristic ways, contributing to a depth effect within the pavilion and a lively, three dimensional appearance when the stone is rotated. From a gemological perspective these inclusions are diagnostic, linking the specimen to Ceylon growth environments and providing a fingerprint that is useful for long term identification and documentation. For design and setting, the dimensions and radiant cut suggest optimal mounting in a bezel or low profile prong setting that protects the corners while allowing crown facet exposure, or alternatively as an elegant center stone for a refined halo that complements its intense hue. The Natural Sapphire Company presents this gem with full disclosure of origin and enhancement, and with the technical profile that informed buyers appreciate for accurate selection and secure investment.