1.64 Ct. Spinel from Tanzania

This specimen is a transparent, natural, pinkish purple spinel weighing 1.64 carats, cut into an oval shape with exact dimensions of 6.97 by 6.33 by 4.83 millimeters. The cutting style is a mixed brilliant, combining a brilliant-cut crown with a pavilion that retains weight and depth, and the finish is graded as excellent polish. Clarity is described as slightly included, evaluated at eye level, which indicates small internal characteristics that are discernible under careful viewing but do not substantially impede light performance or the gemstone's overall transparency. Color intensity is medium intense, producing a balanced saturation that reads visually appealing in a range of lighting conditions. There has been no enhancement to this stone, it is wholly natural and untreated, and provenance is Tanzania, details that are documented and available through The Natural Gemstone Company.

From a proportion and cut-performance perspective, the oval exhibits a length to width ratio of approximately 1.10, which results in a form that is close to round while retaining the elongation that many settings benefit from. The depth of the stone, at 4.83 millimeters relative to the average of its length and width, yields a calculated depth percentage near 72.6 percent. This relatively deep profile contributes to color saturation and a concentrated face-up appearance, characteristics that are often desirable in colored gemstones where hue intensity is valued. The mixed brilliant cut helps to modulate the stone s light return and fire, by marrying broad faceted planes on the crown with scintillating pavilion faceting, and the excellent polish enhances the immediacy of brilliance and the crispness of facet junctions. The slightly included clarity grade, as assessed at eye level, means that while inclusions are present, they are not of a nature that undermines the gem s structural integrity or its suitability for everyday jewelry, particularly given spinel s notable durability.

The Tanzanian origin of this spinel adds a meaningful layer of context and market relevance. Tanzania has produced some of the most highly regarded pink and purplish spinels in recent decades, with deposits in regions such as Mahenge and Tunduru delivering material that is notable for its saturated, pure tonalities and appealing translucence. Geological conditions in these terranes favor the trace element chemistry that yields the pink to violet spectrum in spinel, and the reputation of Tanzanian spinels in the trade reflects consistent quality, distinct color profiles, and a pattern of discovery that has elevated demand. Provenance from Tanzania therefore contributes to the gemstone s desirability among collectors and connoisseurs who value documented origins, it supports traceability in the supply chain, and it can positively influence valuation relative to otherwise similar material without a clear geographic attribution. Because this stone is natural and untreated, its Tanzanian origin is an important attribute that aligns with current market preferences for untreated, traceable colored gemstones.

In practical use and for custodial considerations, this spinel combines visual appeal with robust physical properties. Spinel rates about 8 on the Mohs hardness scale, providing substantial resistance to abrasion and making it suitable for a variety of jewelry settings including rings, pendants, and earrings intended for regular wear, subject to normal care and routine maintenance. The medium intense pinkish purple hue and near-round oval proportions lend themselves to classic solitaire settings as well as contemporary designs where color and brilliance are the focal points. For buyers and designers seeking documentation, The Natural Gemstone Company can provide accompanying gemological information regarding weight, measurements, cut, clarity notation, color grading, polish assessment, and confirmation of lack of enhancement, and we can advise on secure mounting practices and recommended care. The combination of precise dimensions, natural untreated origin, established provenance from Tanzania, and the professional finishing of the cut and polish make this 1.64 carat pinkish purple spinel a technically and aesthetically well-specified gemstone for both collector and jewelry use.