2.09 Ct. Purplish Blue Spinel from Ceylon (Sri Lanka)

This 2.09 carat cushion shape purplish blue spinel presents a technically refined example of Sri Lankan lapidary work, sourced from Ceylon and offered by The Natural Gemstone Company. The gem measures 7.92 x 6.21 x 4.83 mm, the proportions indicative of a slightly deep pavilion which contributes to a strong light return and apparent saturation on the table. The cutting style is faceted, executed in a mixed brilliant configuration, combining a step influenced pavilion structure with brilliant style facets on the crown. The mixed brilliant design balances scintillation from the brilliant facets, with architectural light play from the pavilion steps, producing a controlled spread of flashes across the table and crown. Clarity is graded slightly included at eye level, the inclusions being minor and well positioned so as not to interrupt the stone s overall facet pattern or degrade the vibrancy of the intense color. The polish is excellent, surface luster showing crisp facet junctions and minimal polish lines, the symmetry consistent with a quality precision cut.

Color characterization for this spinel is purplish blue with intense saturation and a medium to slightly deep tone, qualities that make the stone appear richly saturated under natural daylight, and warmer with subtle violet emphasis under incandescent lighting. Spinel is isotropic, and this specimen shows uniform color across the table with minimal color zoning, indicating careful orientation of the rough prior to cutting. The absence of enhancement is an important provenance detail, the gem being natural and untreated, which preserves original crystal chemistry and color behavior. Optical properties to note for technically minded buyers include a refractive index in the expected spinel range, a single refractive value producing clean, unbent light transmission, and modest dispersion which contributes to fire without overpowering the primary hue. The intense color intensity combined with transparent body tone yields excellent visual impact for a gem of this weight.

From a setting and design perspective the slightly deep pavilion and mixed brilliant faceting inform practical choices for custom work. For a ring intended for daily wear, a four or six prong head with secure crown support is recommended to allow maximum light entry through the crown facets, while minimizing contact with the girdle to preserve the optic performance. A low bezel could be used to enhance security, but a full bezel will reduce apparent brilliance due to restricted crown exposure. Metals such as platinum or 18 karat white gold will complement the cool purplish blue tonality, maintaining contrast and clarity, whereas 18 karat rose gold will introduce a complementary warm counterpoint that lifts the violet notes. Design accents can be diamond melee in a micro pave halo to increase perceived table brightness, ideally using near colorless melee to avoid introducing warm bias. For geometric balance with the cushion outline, tapered baguettes or shield cut side stones set in a cathedral shoulder configuration will emphasize length and create a refined visual axis.

When considering complementary gemstones for a custom piece, color theory and refractive interplay guide strategic choices. For a harmonious ensemble that leans cool, matched Ceylon blue sapphires in small rounds or baguettes will reinforce the blue axis, while light pink sapphires will produce a delicate bi color contrast that emphasizes the purplish notes. For high contrast, green stones such as mint tourmaline or tsavorite garnet will create a vivid complementary pairing that heightens perceived saturation through juxtaposition. Diamond accents work to neutralize and brighten, providing scintillation that does not compete chromatically, optimal for halo or pav parures. Because the spinel is unenhanced and durable with a Mohs hardness around eight, it is suitable for most daily wear applications with proper mounting choice, ultrasonic cleaning can be used but should be approached with caution if other non durable accent stones are present, and routine maintenance with warm soapy water and a soft brush is recommended for maintaining facet luster. For custom design consultations and appraisal documentation, or to discuss exact setting dimensions and recommended accent stone sizes, please contact The Natural Gemstone Company, our team will provide detailed CAD friendly measurements and suggestions to maximize the optical performance of this exceptional Ceylon spinel.