0.37 Ct. Spinel from Ceylon (Sri Lanka)

This gem is a transparent 0.37 carat purplish blue spinel, precisely faceted into a trillion shape with dimensions of 4.48 x 4.66 x 2.83 millimeters. The stone exhibits a medium color intensity that balances depth and versatility, producing an attractive tone that reads as distinctly purplish blue under neutral lighting conditions. Clarity has been assessed as slightly included when evaluated at eye level, indicating the presence of small natural inclusions that do not detract from the overall visual appeal or structural integrity. The cut and excellent polish work together to maximize light return from this relatively compact weight, creating greater perceived size and a lively play of brilliance relative to its 0.37 carat weight. The absence of any enhancement confirms that the color and clarity are entirely natural, and the gem’s origin in Ceylon, Sri Lanka, contributes to its desirability among connoisseurs familiar with the region’s quality spinel production.

The 0.37 carat weight of this trillion spinel represents premium quality in a smaller format through the combination of precision cutting, strong polish, and natural, attractive color. Trillion faceting concentrates and refracts light toward the surface, amplifying the gemstone’s presence on the finger or in a pendant despite sub-half-carat weight. At the given proportions, the stone achieves an efficient balance between table size and depth, which helps maintain an open face-up appearance while preserving the gem’s color saturation. Slight inclusions present at eye level are characteristic of many natural spinels and are generally stable within the crystal lattice; they are minor and do not compromise wearability. The excellent polish enhances facet crispness and surface smoothness, which aids in both brilliance and the tactile quality of a mounted gem. Collectors and makers often regard such well-executed small stones as premium because they deliver high optical performance and natural provenance without relying on treatments.

From a design and provenance perspective, this Ceylon spinel offers both aesthetic flexibility and collector value. Its purplish blue hue is well suited to white metals such as platinum or white gold to emphasize cool tones, and it pairs gracefully with yellow gold when a warmer contrast is desired, allowing the 0.37 carat stone to serve as an elegant center in minimalist solitaires or as a refined accent within multi-stone settings. The trillion shape lends itself to three-prong, bezel, or custom tension settings that secure the gem while showcasing its triangular silhouette. As supplied by The Natural Gemstone Company, this spinel is presented as an untreated, natural specimen with documented measurements, clarity assessment, and polish grading, attributes that support both aesthetic and investment considerations. Routine care involves gentle cleaning with warm soapy water and a soft brush, and avoidance of harsh chemicals or ultrasonic cleaners if inclusions are a concern, though spinel generally demonstrates excellent durability for everyday wear.

In summary, the 0.37 carat purplish blue trillion spinel from Ceylon combines a measured, natural color intensity, slightly included clarity at eye level, and an excellent polish to deliver a premium-quality gem in a modest carat weight. The precise 4.48 x 4.66 x 2.83 millimeter proportions and refined trillion cut optimize brilliance and face-up presence, allowing the stone to perform like a larger gem proportionally. The lack of enhancement underscores its natural origin and stability, and the presentation by The Natural Gemstone Company includes detailed specifications to inform mounting and appraisal decisions. For those seeking a compact yet high-quality natural spinel with clear provenance and superior finishing, this 0.37 carat trillion offers a compelling option for refined jewelry applications.