1.15 Ct. Greyish Blue Spinel from Ceylon (Sri Lanka)

One beautiful transparent 1.15 carat cushion shape greyish blue spinel from Ceylon Sri Lanka is presented by The Natural Gemstone Company, a stone that combines classic form with modern technical cutting to deliver exceptional optical performance. The gem measures 6.64 by 5.73 by 3.54 millimeters, and has been faceted with a mixed brilliant cutting style to harmonize crown and pavilion facets for optimized light return. This spinel has a clarity grade of very slightly included when evaluated at eye level, a medium color intensity that reads as an elegant greyish blue in a range of lighting conditions, and an excellent polish that refines every facet junction. There has been no enhancement applied to this stone, which matters to informed buyers because it preserves the natural character and value of the material. The combination of origin, natural color, and meticulous cutting is the foundation of the stone s appeal to collectors and jewelers who prioritize authenticity and enduring beauty.

The geometric faceting of this cushion spinel has been planned and executed to allow maximum light play, balancing brilliance and scintillation across its surface. Mixed brilliant cuts employ a brilliant style on the crown with step or modified facets on the pavilion, creating planes that capture incoming light and return it as flashes of white light and subtle spectral dispersion. For spinel this approach works particularly well because spinel is an isotropic gem with a refractive index that typically sits between 1.712 and 1.736, and with modest dispersion near 0.018, therefore achieving optimal sparkle depends more on precision of angles and facet symmetry than on dispersion alone. The precise geometry of the pavilion and crown on this 6.64 by 5.73 by 3.54 millimeter example produces strong face up brightness, lively contrast, and even scintillation, attributes that educated buyers recognize as hallmarks of superior cutting. The cushion outline gives a slightly softened rectangular silhouette that increases the perceived size while maintaining a classic profile, and the mixed facet arrangement allows the stone to present a dynamic visual effect as it moves.

Clarity and polish are often overshadowed by color in the buying process, yet they are central to long term satisfaction and to accurate valuation. The grade very slightly included at eye level indicates that the stone may contain minor internal features that are visible under careful inspection, yet these inclusions do not detract from the gem s transparency or its ability to display light. In practical terms the very slightly included grade sits within a range that balances rarity and accessibility, providing a clear window through which the spinel s greyish blue tone can be appreciated without the performance penalties associated with heavier inclusions. The excellent polish is equally significant, because high quality surface finishing minimizes light leakage and enhances the crispness of facet junctions. Together clarity and polish support the mixed brilliant cut s capacity to return maximum light to the viewer, and they contribute to the gem s overall perceived quality in hand or when set in jewelry.

Origin and treatment history are matters of increasing importance to discerning buyers, and this spinel s Ceylon provenance and unenhanced status are both meaningful. Sri Lanka has a long and well documented history of producing fine spinels with a range of attractive colors, and material from this region carries a reputation for clean crystals and balanced tones. A natural greyish blue spinel that has not undergone heat treatment or any other enhancement retains a premium position in the market, because many gemstones offered commercially have seen interventions to intensify color or clarity. The absence of enhancement means the stone s color is inherent and stable, and it allows an appraisal or gemological report to reflect original material characteristics. At 1.15 carats this cushion spinel occupies a comfortable and desirable weight class for use in center stone applications such as timeless rings or elegant pendants, and the medium color intensity ensures versatility across metal choices and complementary gemstones while still maintaining a distinct personality.

For buyers seeking a trustworthy acquisition The Natural Gemstone Company supports this offering with transparent information and options for independent verification. The physical proportions of 6.64 by 5.73 by 3.54 millimeters produce an approximate depth proportion in the high fifties percent range, a proportion that supports both durability and optimal light performance when mounted. Spinel s hardness of eight on the Mohs scale provides reliable wearability for daily jewelry items, and simple care routines using mild cleaning solutions and soft brushes will maintain polish and sparkle. For buyers interested in a completed piece we provide bespoke setting recommendations that complement the cushion outline and highlight the greyish blue color, with prong and bezel solutions that can emphasize brilliance or protect the stone for active wear. We also offer guidance on obtaining a formal gemological report from a reputable laboratory upon request, and we are available to discuss provenance documentation, appraisal services, and custom design options. The Natural Gemstone Company invites inquiries from collectors and jewelers who appreciate the combination of natural origin, precise geometric faceting, and ethical sourcing in a fine 1.15 carat cushion spinel.