0.48 Ct. Spinel from Ceylon (Sri Lanka)

This purplish blue spinel presents itself as a technically refined gem, weighing 0.48 carat, with an oval outline measuring 4.93 by 4.18 by 3.20 millimeters. Its length to width ratio is approximately 1.18, yielding a classic oval silhouette that balances face up spread with lively brilliance. The stone was cut as a mixed brilliant, a faceting strategy that marries a brilliant style crown to a complementary pavilion geometry, designed to optimize return of light for spinel s optical index. The pavilion depth relative to length produces an overall depth of approximately 65 percent, a proportion that enhances saturation without creating a heavy or murky appearance. Color is classified as purplish blue with intense color intensity, the hue remaining vivid and evenly distributed when viewed face up. Clarity was graded as very very slightly included at eye level, indicating that the internal features are minute and do not detract from the gem s transparency, and the finish is described as excellent polish. There has been no enhancement of any kind, and the material is of Ceylon origin, coming from the well known deposits of Sri Lanka.

From a lapidary perspective the mixed brilliant execution on this oval spinel reflects deliberate technical choices. The crown was cut with precise pavilion to crown proportions to control windowing and maximize scintillation, while the pavilion facet angles were optimized for spinel s refractive index around 1.72 so as to enhance internal light return rather than mere color absorption. The cutter maintained consistent facet symmetry, crisp junctions and parallax free facet alignment, all of which are evident in the stone s face up performance. The polish stage employed progressively finer laps to remove micro abrasion and to bring the facet planes to a mirror finish, which is crucial for an intense colored stone where surface reflections influence perceived saturation. The choice of a mixed brilliant rather than a full step or full brilliant approach was intentional, marrying the color saturation advantage of deeper proportions with the lively flash and scintillation that knowledgeable buyers expect from fine spinel.

Clarity considerations were addressed during preforming and cutting, with inclusions located and plotted so that the table and main facets avoid any significant internal interruptions. The very very slightly included grading at eye level denotes inclusions that are typically only noticeable under close scrutiny or magnification, and which do not compromise structural integrity. Spinel s isotropic crystal system and robust hardness make it tolerant of precise faceting and aggressive polishing, enabling tight facet junctions and a durable girdle profile. The cutting sequence prioritized retention of weight while maximizing face up color and minimizing windowing, a technique that requires balancing pavilion angle, table size and crown height. The result is a gem that presents intense purplish blue color, even tone across the table, lively facet contrast and an excellent polish that together affirm both the technical skill of the cutter and the quality of the rough.

The journey of this spinel from mine to market is a narrative of selective sourcing and skilled craftsmanship, managed from the point of extraction in Ceylon through to presentation by The Natural Gemstone Company. The rough was recovered from Sri Lankan alluvial gravels in a region with centuries of gem trade, where small scale miners identify pockets of crystallized spinel fragments. After initial sorting in the field, the best fragments are sent to experienced dealers in Sri Lanka for identification and basic cleaning, then carefully selected by our buyers for color, transparency and structural soundness. The chosen rough was then entrusted to a master cutter who oriented the material to exploit the purplish blue hue, using precise preforming to preserve weight while defining the eventual oval proportions. Multiple stages of faceting and progressive polishing followed, with intermittent loupe and microscope inspections to ensure that facet junctions, symmetry and finish meet rigorous standards. Final appraisal confirmed the no enhancement status, the clarity grading at eye level, and the measurements and weight recorded here. The finished stone was acquired by The Natural Gemstone Company and prepared for offering to connoisseurs who value technical excellence, natural color and verified origin. For collectors and setters seeking a compact yet vivid spinel, this piece represents a technically considered choice, ready to be evaluated in hand or set as a centerpiece in a finely crafted jewelry design.