1.31 Ct. Spinel from Ceylon (Sri Lanka)

This transparent 1.31 carat round blue spinel from Ceylon Sri Lanka is presented by The Natural Gemstone Company with full attention to the attributes that informed collectors and connoisseurs value most, the dimensions are 6.80 by 6.80 by 4.24 millimeters, and the stone exhibits a mixed brilliant cut, very slightly included clarity as evaluated at eye level, medium color intensity, and an excellent polish, no enhancement has been applied. The round outline and the carefully managed depth, which is approximately 62 percent of the diameter, reflect a cutter intent on balancing weight retention with optical performance, producing a gem that reads with good visual size on the hand while maintaining a pleasing pavilion depth to support strong internal light return. The medium color intensity is an elegant, saturated blue that benefits from the clarity and transparency of the material, allowing the hue to present evenly across the table and crown facets without appearing overly dark or washed out, and the excellent polish ensures facet junctions remain crisp and free from surface disturbance that could mask the stones true brilliance.

The mixed brilliant cut is the principal reason this spinel performs with lively activity, the cutter has combined brilliant style facets on the crown with a modified arrangement in the pavilion to optimize both return of white light and controlled areas of contrast that create scintillation. Brilliant crown facets capture and disperse incoming light into a field of flashes, while the mixed pavilion geometry governs the pathways by which light is reflected internally and redirected through the table, the result is a clear presentation of brilliance and contrast that accentuates the blue hue rather than obscuring it. Because spinel is isotropic and exhibits consistent optical behavior regardless of orientation, precision in facet angles and symmetry is especially important, and this stones facet relationships and excellent polish allow for multiple internal reflections before light exits the gem, producing pleasing brightness and a lively play of pinpoint highlights as the stone is moved. The clarity grade described as very slightly included indicates only minimal internal features that do not materially detract from overall transparency or light performance when viewed by the unaided eye, and in practice this means strong face up appeal combined with durability and day to day wearability.

For an educated buyer the combination of provenance, natural state, cut, and condition is what confers long term value, Ceylon Sri Lanka remains a respected origin for colored stones, known for producing spinels with refined color and stable natural character, and the fact that this specimen is untreated enhances its desirability in a market that increasingly prizes natural material. Spinel is robust enough for frequent wear with a hardness of 8 on the Mohs scale, and the stones round mixed brilliant cut makes it versatile for a wide range of settings from solitaire rings that showcase center brilliance, to elegant pendant or stud settings where the stones balanced proportions and scintillation can be admired from many angles. The Natural Gemstone Company carefully documents the physical attributes and the absence of enhancement to support provenance and valuation, and we encourage clients to consider bench mounting that secures the girdle while allowing the crown facets to interact freely with light, this approach maximizes the optical advantages engineered into the cut. For collectors and bespoke jewelers seeking a compact but luminous blue spinel with excellent polish, attractive medium saturation, eye level clarity described as very slightly included, and clean origin from Ceylon Sri Lanka, this 1.31 carat round mixed brilliant offers a refined and verifiable option that balances aesthetic appeal with gemstone integrity.