0.63 Ct. Bluish Green Sapphire from Madagascar

This gemstone is a transparent round bluish green sapphire weighing 0.63 carat, with precise dimensions of 5.04 x 5.06 x 3.29 millimeters. The faceting follows a mixed brilliant schema, combining a brilliant style crown with a complementary pavilion design, engineered to balance intense light return with controlled color saturation. Under standard viewing the color intensity reads as medium intense, presenting an even distribution of bluish green across the table and crown facets. Clarity is graded as very slightly included, evaluated at eye level, meaning the stone is visually clean to most observers while retaining microscopic character in internal growth patterns and occasional pinpoint inclusions that do not detract from performance. The polish is excellent, producing crisp facet junctions and mirror like facet surfaces that enhance scintillation and contribute to a lively face up appearance. No enhancement has been applied to this sapphire, the natural color and internal structure are intact, and the native optical properties of corundum are preserved.

The cut and finish on this stone demonstrate deliberate craftsmanship focused on optical optimization and weight retention. The mixed brilliant approach allows the cutter to maintain a harmonious table to crown ratio, while sculpting pavilion angles that promote constructive interference and optimal return of light into the observer plane. The crown facets are arranged to produce a lively star and broad flash pattern at normal viewing distances, while the pavilion facets are calibrated to deepen color without creating a dead center window. Facet symmetry and junction precision are evident at high magnification, and the girdle profile is consistent and suitable for secure setting. The cutter preserved as much rough as practical to yield this 0.63 carat result, a decision that preserves natural tone and minimizes unnecessary heating. The overall result is a gem that balances brilliance, fire, and color saturation, with durability inherent to corundum, which rates nine on the Mohs hardness scale, making it an excellent candidate for everyday wear when set with appropriate protection.

The provenance of this sapphire traces to Madagascar, a source known for producing a broad palette of sapphire colors in both primary pegmatitic and alluvial contexts. The journey began in the field with careful extraction from weathered gravels and matrix pockets, followed by localized sorting to identify material with potential for transparent, gem quality results. From there the rough was selected and routed to experienced cutters who make precise decisions about orientation, facet plan, and the final mixed brilliant design, decisions that directly affect the way color and inclusions present in the finished gem. At each stage the stone was evaluated for treatment, and no enhancement was applied, ensuring that clients receive an unheated, natural sapphire. The Natural Sapphire Company maintains strict standards for traceability and documentation, and this gem was cataloged with recorded dimensions, weight, and visual grading notes. Before it reached the market the stone underwent final quality control inspections for polish, symmetry, and surface condition, and was photographed and measured for accurate representation. This chain from mine to market underscores a commitment to transparency, with skilled hands shaping the rough into a calibrated, market ready gem.

In practical design terms this bluish green round sapphire offers significant versatility. Its 5.04 to 5.06 millimeter spread sits well within standard bezels and four prong settings, and its medium intense saturation makes it an attractive center for delicate engagement rings or as a colored accent in custom pieces. Because the stone displays lively facet reflections and a subtle play of blue and green depending on light angle, it benefits from open settings that allow light to enter from the pavilion, while a protective bezel may be preferred for active wearers to guard the girdle. The very slightly included clarity grade suggests that inclusions are not visually dominant, but a skilled setter will position the stone to minimize any visibility of internal features in the final mounting. The Natural Sapphire Company offers bespoke mounting options and gem setting services, and this sapphire is presented with full measurements and treatment disclosure to facilitate design decisions. For collectors and connoisseurs seeking a natural, unheated corundum with technical integrity and aesthetic appeal, this 0.63 carat bluish green mixed brilliant round sapphire represents a finely executed example of Madagascar origin material, ready to be transformed into an heirloom quality piece.