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

This 7.22 carat oval greenish blue sapphire from Ceylon Sri Lanka presents a carefully balanced combination of size and proportion, ideal for a centerpiece in fine jewelry. The gemstone measures 13.69 by 9.04 by 6.73 millimeters, yielding an elegant length to width ratio of approximately 1.51, and a depth percentage near 59 percent, which contributes to a pleasing face up profile and controlled light performance. Cut as a faceted stone with a mixed brilliant cut, the pavilion and crown facets are configured to optimize scintillation and color dispersion, while the finish reflects an excellent polish across all facet junctions. Color intensity is graded as dark, producing a rich greenish blue tone that remains vivid across the table and crown, and the stone has been heat treated, a standard enhancement practiced to stabilize and improve saturation and clarity for natural sapphires.

Optical performance is defined by balanced light return and focused windowing appropriate to its mixed brilliant faceting scheme, which combines brilliant facets on the crown and modified step or brilliant elements on the pavilion to enhance both fire and depth. The stone appears transparent, offering clear visual access to the internal features without hazing, and the dark color intensity produces strong color presence while maintaining surface brilliance. The excellent polish enhances facet contrast and contributes to crisp reflections under magnification, while the faceting symmetry supports even color distribution across the table. At eye level the clarity grade is evaluated as eye clean, indicating that no inclusions detract from appearance to an unaided observer, and the stone’s proportions and finish are well suited to custom settings that emphasize either brightness or depth according to design intent.

Internal characteristics serve as natural identifiers, and this sapphire exhibits a suite of microscopic features that add to its character while supporting its natural origin. Under moderate magnification one may observe fine silk like rutile needles, minute crystal inclusions, and subtle growth zoning consistent with corundum formation in a metamorphic environment, features commonly found in Ceylon material. These inclusions are not visible to the unaided eye, which is reflected in the eye clean assessment, yet they provide a unique internal fingerprint that trained gemologists use to corroborate origin and treatment history. The heat treatment is conventional and focused on color enhancement and clarity improvement, and the internal features present are consistent with a natural, heated sapphire rather than synthetic or fracture filled material. Rather than diminishing value, these microscopic characteristics authenticate provenance and convey the geological story of the gem, contributing to a sense of individuality that cannot be replicated by laboratory growth or heavy enhancement.

This sapphire is suitable for high quality jewelry applications where both presence and durability are required, including engagement rings, pendants, and statement rings. Corundum is a robust gem species, and the heat treatment applied is stable under normal wear conditions, though professional setting and proper mounting are recommended to protect the girdle and avoid surface knocks. Routine care may include warm soapy water cleaning, and professional ultrasonic or steam cleaning may be appropriate after consultation with a qualified jeweler, particularly if the setting shields the stone or contains internal stress features. The Natural Sapphire Company stands by the documented origin and treatment of this stone, and we provide detailed information to support appraisal and custom design decisions. For clients seeking a natural Ceylon sapphire with substantial weight, notable dimensions, and an eye clean appearance that conceals a microscopic natural fingerprint, this 7.22 carat greenish blue oval presents a refined balance of color, clarity, and craftsmanship.