3.63 Ct. Spinel from Tanzania

This 3.63 carat cushion shaped pink spinel presents an exceptional combination of measured proportions and rooted natural color, dimensions 9.52 x 8.44 x 5.50 millimeters, mixed brilliant cut, clarity graded very very slightly included evaluated at eye level, medium color intensity, and an excellent polish. The depth measures approximately 61.3 percent based on the provided dimensions, a proportion that favors balanced light performance and color saturation for spinel, allowing ample internal reflection without becoming overly deep. The pavilion and crown are cut with deliberate control, the crown facets providing a strong array of small flashes and the pavilion architecture directing light back through the table in a coherent manner, yielding both scintillation and a stable face up color. This stone is natural, unenhanced, sourced from Tanzania, and presents a transparency that supports both gemological assessment and high impact presentation in a fine setting.

From a faceting and optical standpoint this piece demonstrates refined lapidary technique, the mixed brilliant design combining a modified brilliant facet arrangement on the crown with a stepped and truncated pavilion that increases return and scintillation while maintaining table brilliance. The facet junctions appear crisp, and the excellent polish enhances the microreflectivity that creates a lively pattern of light across the crown. The girdle appears to be faceted to control thickness and girdle reflections, and the culet is small and well centered, minimizing light leakage at the base. As a spinel, its refractive index falls within the approximate range 1.712 to 1.736, with essentially no birefringence, which yields clean, undoubled facet images, and a modest dispersion value near 0.018, which contributes targeted flashes of spectral color rather than broad fire. That optical profile, combined with the medium pink saturation of this specimen, produces a stone that reads as vivid without appearing overcharged, enabling precise control of hue and tone when set under various lighting conditions.

For collectors and jewellers seeking a centerpiece grade spinel, this gem is an outstanding candidate, its weight and proportions translating to a commanding presence in a ring or pendant while remaining practical for daily wear due to the inherent toughness of spinel on the Mohs hardness scale. The unenhanced origin from Tanzania increases its appeal to purist buyers and those focused on traceability, and the cut quality makes it particularly suitable for settings that maximize table visibility and crown faceting, such as four prong or semi bezel mounts that expose the pavilion for light entrance. In white or platinum settings the cooler metal will emphasize the pink tone and brilliance, while rose gold can sympathetically enhance the warm facets of the hue. The Natural Gemstone Company stands behind the craftsmanship and provenance of this stone, and we can provide additional high resolution imagery, angle views, and independent identification documentation on request, to support confident acquisition and accurate design planning. If you would like to discuss custom mounting options, parcel matching, or a video inspection of this cushion pink spinel, please contact our gemstone specialists and we will facilitate all technical details and practical considerations for integrating this exceptional spinel into your collection.