0.95 Ct. Purple Spinel from Ceylon (Sri Lanka)

This 0.95 carat oval purple spinel, with exact dimensions of 6.74 x 5.09 x 3.91 mm, represents a refined balance of size, weight, and optical performance, presented by The Natural Gemstone Company. The gem is cut in a mixed brilliant style, combining the light return mechanics of a brilliant facet array with the color retention advantages of step-like pavilion elements, delivering both scintillation and saturated color. Clarity is graded as eye clean under standard viewing at eye level, which ensures the stone presents as visually pure and uninterrupted by internal inclusions, a key quality factor for collectors and setters alike. Color intensity is described as intense purple, a hue that retains depth under varied lighting, and the piece exhibits an excellent polish that renders facet junctions crisp and surface reflection clean. There is no enhancement documented, and the spinel is from Ceylon Sri Lanka, a region noted for producing transparent, high quality spinels with natural saturation and stability.

The mixed brilliant cut of this oval spinel employs a careful distribution of facet sizes to manage both light dispersion and color concentration, with a moderately sized table that protects color saturation while permitting strong crown reflection. The crown facets are executed to optimize crown angle relationships with the pavilion, promoting a balanced exchange between face up brightness and internal color return. The pavilion configuration follows a modified step pattern which deepens the apparent color from face up while avoiding windowing that can dilute saturation, and the girdle thickness is controlled to facilitate secure bezel or prong mounting without introducing unnecessary weight. Facet polish and symmetry are at an excellent grade, meaning facet planes meet with clean lines, facet angles are consistent around the perimeter, and the culet position and alignment preserve the intended light path. These craftsmanship details matter in practice, because the interplay between crown and pavilion angles, table size, and facet symmetry directly determines both the qualitative and measurable outcomes of brilliance, scintillation, and color uniformity.

From an optical properties perspective this spinel distinguishes itself in several technical ways when compared to more commonly encountered gemstones. Spinel is isotropic, meaning it is singly refractive and does not exhibit birefringence, therefore facet junctions appear crisply defined and internal light patterns remain coherent as the stone is tilted, a trait that differs from corundum species such as sapphire and ruby which are birefringent and can show slight doubling in certain orientations. The refractive index of spinel is approximately 1.718 which lies between that of quartz and corundum, this moderate refractive index yields a lively brilliance that is perceptibly stronger than quartz varieties like amethyst, yet more restrained than higher index materials such as diamond and ruby, allowing the color to express without being overwhelmed by excessive white light return. Dispersion in spinel is modest, which results in clean white light return and focused flashes of fire when appropriately faceted, this serves to emphasize the rich purple hue without fragmenting it into distracting spectral colors. The intense color intensity of this particular stone benefits from the mixed brilliant design because the step influenced pavilion deepens the perceived saturation while the brilliant crown facets maintain scintillation, therefore in practical terms the spinel offers a combination of vivid body color and lively sparkle that outperforms many similarly sized sapphires and amethysts in apparent face up color, and which presents with sharper facet contrast than many garnet varieties that can have higher RI but more internal complexity.

For practical use and value considerations this 0.95 carat Ceylon spinel is an excellent candidate for a fine jewelry center stone where both color fidelity and optical performance are required, such as in rings where the viewer sees the stone face up, or in pendants where consistent light exposure enhances the evenness of tone. The fact that this material is unenhanced increases its desirability to connoisseurs who prioritize natural state gems, and the eye clean clarity grade means the cutter could aim for minimal setting encroachment on the stone surface while retaining maximum table area for optimal face up presence. Care recommendations are consistent with hard, durable gemstones, avoid harsh impacts and prolonged exposure to high heat, routine cleaning can be performed with warm soapy water and a soft brush to preserve the excellent polish, and professional reinspection before any setting work will ensure the proportions are matched to the chosen mounting. The Natural Gemstone Company stands behind the documented origin, unenhanced condition, and grading observations, and we welcome inquiries regarding bespoke mounting options, independent laboratory documentation, and comparative viewing to illustrate how this spinel’s combination of intense natural color, precise mixed brilliant faceting, and superior finish produces a distinctive visual performance that separates it from more common purple gemstones.