2.33 Ct. Spinel from Tanzania

This 2.33 carat bluish purple spinel from Tanzania is cut in a classic emerald cut shape, with dimensions 8.42 by 6.33 by 4.60 millimeters, and a measured depth of approximately 62.4 percent. The faceting follows the traditional step cut architecture with parallel crown and pavilion facets, truncated corners, and a generous table. Color is evaluated as intense with a cool bluish purple saturation that is uniform across the table, and the stone is graded slightly included at eye level with no significant cavities or cleavage planes that would compromise durability. The spinel has not been enhanced, and the excellent polish and precise facet junctions attest to careful lapidary work. The Natural Gemstone Company presents this specimen as an untreated example that highlights natural color and clarity within a robust cutting style, suitable for connoisseurs seeking a clean, well proportioned gem.

Technically, the emerald cut amplifies the stone’s intrinsic optical behavior by trading scintillation for broad, controlled flash and by maximizing color depth. Spinel has a refractive index in the neighborhood of 1.72 and low optical dispersion, so faceting strategy is critical to achieve strong face up appeal. The step facets on crown and pavilion create large reflective planes that produce broad flash zones and deep color windows, rather than the broken scintillation typical of brilliant cuts. In this example the pavilion step angles and crown slope are balanced to promote efficient light return, minimizing windowing along the table while preserving saturation. The relatively deep profile supports stronger color saturation, and the large table lets the eye read the intense bluish purple evenly. The excellent polish enhances surface transmission, reducing light scatter and sharpening facet contrast, while accurate symmetry ensures repeated facet reflections align to create clean, parallel flashes. In practical terms the cut converts the spinel’s modest dispersion into pronounced color presence and controlled internal reflections, making the gem read as vivid and lively under direct light, and elegant with even color in softer illumination. This stone is technically refined, ideal for buyers who prioritize cutting logic and optical performance as much as natural provenance, and The Natural Gemstone Company stands behind the quality of its craftsmanship and untreated origin.