1.58 Ct. Purple Spinel from Ceylon (Sri Lanka)

This gemstone is a transparent 1.58 carat oval purple spinel, precisely measured at 7.47 by 6.48 by 4.62 millimeters, exhibiting intense color saturation and an excellent polish, originating from Ceylon Sri Lanka and supplied by The Natural Gemstone Company. The cutting style is faceted with a mixed brilliant configuration, combining a brilliant facet arrangement on the crown with a complementary pavilion design to optimize light return and scintillation. The clarity is graded as very slightly included, evaluated at eye level, indicating small internal characteristics that do not materially reduce brilliance or performance when mounted, and the stone is completely natural with no enhancement. As an isotropic mineral with a refractive index in the typical spinel range, and with a hardness around 8 on the Mohs scale, this spinel balances durability and optical performance for daily wear in rings or pendants. The length to width ratio is approximately 1.15, producing a subtly broad oval silhouette, with a measured depth of 4.62 millimeters, yielding a depth proportion of approximately 61.9 percent, a geometry that supports a pleasing table size and lively return of light.

The mixed brilliant cut on this oval purple spinel is executed to emphasize contrast and scintillation, the crown featuring multiple kite and star facets to break light into fine scintillation, and the pavilion using controlled step and modified brilliant facets to prevent windowing and promote even light leakage, producing a crisp face up appearance. The cutter has maintained skillful facet junctions and symmetry, contributing to the excellent polish grade, and the pavilion depth and crown angles were chosen to maximize the gemological tradeoff between brilliance and face up color saturation. Very slightly included clarity at eye level implies inclusions are small and well placed, often below the girdle plane or aligned with facet junctions, so they remain inconspicuous once set. The lack of enhancive treatments preserves the untreated purple hue, which in Ceylon spinels often displays a balanced mixture of red and blue undertones, and because spinel is isotropic there is no pleochroic color separation to complicate matching and orientation in a custom mounting.

When designing a custom piece around this 1.58 carat oval purple spinel, complementary gemstones and specific cuts can be selected to enhance color, contrast, and overall composition, diamonds in round brilliant melee around the girdle create a halo that maximizes apparent diameter and adds controlled white light sparkle without competing with the intense purple. For side stones consider tapered baguettes or tapered trapeze diamonds to follow the oval profile and maintain visual flow, or use paired trillion cut tsavorite garnets to introduce a vivid green contrast that sits opposite purple on the color wheel, producing a lively visual tension. For an analogous color palette, pair the spinel with pink sapphires or rubellite tourmalines in round or cushion cuts to create a graduated field of warm pink to purple tones, ideal for three stone ring compositions. If a cooler palette is desired, deep cornflower blue sapphires in oval or cushion cuts provide a refined tonal transition that preserves overall saturation. For bespoke earrings or a pendant, use a double halo of small brilliant diamonds on the outer row with a row of micro pavé pink sapphires or rhodolite garnets closer to the spinel, combining sparkle and color that frame the oval center in layered depth.

Practical considerations for setting and metallurgy are central to long term satisfaction with a custom piece, platinum or 18 karat white gold will emphasize the coolness of the intense purple and support a secure prong or bezel setting, while 18 karat rose gold will warm the stone and intensify perceived depth of color, and 18 karat yellow gold can impart a classical richness that contrasts elegantly with the purple. For a solitaire engagement setting a low profile four or six prong design with subtly tapered prongs preserves face up color and allows light to enter the pavilion, while a bezel or partial bezel offers additional protection for active wearers, at the cost of slightly muting apparent brilliance. When integrating accent stones choose well matched calibrations, round brilliant melee for maximum brilliance, step cut baguettes for architectural clarity, and trillion cuts for dynamic flanking highlights, and account for refractive index differences by placing higher dispersion stones such as diamonds in positions to supply white sparkle, while lower dispersion colored stones maintain saturated color fields. Given the natural origin from Ceylon Sri Lanka and the absence of treatments, we recommend documenting the stone with photographic records and, for significant commissions, optional gemological verification that records weight, measurements, cut descriptions, clarity observations, and origin attribution to ensure provenance is preserved.

At The Natural Gemstone Company we focus on the technical precision of every gem we offer, and this 1.58 carat oval purple spinel is an exemplary candidate for a custom commission where subtle proportions, facet architecture, and complementary stone selection are decisive. We can provide CAD visualizations that demonstrate how different halo widths, side stone geometries, and metal choices alter apparent size and color, and we advise on secure setting choices that protect the girdle and pavilion, while showcasing the mixed brilliant cut performance. For customers who value long term wearability we note that spinel resists everyday abrasion better than many other gems, and routine care consists of periodic cleaning with warm soapy water and a soft brush, avoiding harsh chemicals and extreme heat. If you would like design sketches, specific metal and accent stone quotes, or to reserve this exact oval purple spinel for a bespoke ring, pendant, or pair of earrings, contact The Natural Gemstone Company and we will provide technical drawings, matching gemstone options with cutting styles and color grades, and an ethical provenance statement tailored to this Ceylon spinel.