0.71 Ct. Yellowish Green Cabochon Cat’s Eye Chrysoberyl from Tanzania

This 0.71 carat round yellowish green chrysoberyl, sourced from Tanzania and presented by The Natural Gemstone Company, embodies a balance of measured dimensions and refined lapidary execution, 4.55 by 4.35 by 3.58 millimeters, cabochon cut, translucent with a light color intensity, and evaluated at eye level as very very slightly included. The round outline is precisely matched to the original crystal habit, allowing the cutter to maximize the optical response while preserving weight, the dome profile has been calibrated to an effective height that favors the generation of a clean chatoyant band, and the base was shaped to maintain internal symmetry and to reduce light leakage in the lower girdle area. Clarity assessed at eye level yields minimal internal features that do not interrupt the primary optical phenomenon, and the excellent polish applied to the dome ensures low surface scattering and high surface gloss, which together contribute to a sharp, well defined band of light when viewed under direct illumination. No enhancement has been performed on this stone, preserving its natural color and internal structure, and the combination of transparency and light tone produces a soft yet distinct yellowish green appearance that reads evenly across the surface.

The cat s eye effect, or chatoyancy, exhibited by this chrysoberyl results from oriented, parallel, rod like or acicular inclusions and fibrous growth features within the crystal, the cutter oriented the cabochon axis precisely perpendicular to these inclusions so that a single, narrow luminous band appears to traverse the dome, the band is tight and centrally located when the stone is viewed face up, and it translates smoothly and predictably across the surface when the stone is tilted. Optically, the phenomenon is produced by the coherent reflection of light from a large number of aligned planar or fibrous inclusions, acting collectively as a plane mirror that focuses reflected light into a line, the quality of the band depends on several interrelated parameters, including the density and uniformity of the inclusions, the depth and curvature of the cabochon dome, and the symmetry of the round outline, this particular specimen demonstrates a particularly well focused band with good contrast against the yellowish green body color, and the translucency of the material allows the band to appear as a luminous, silky thread rather than a broad washed highlight, under directional light the band can be traced continuously from one edge of the dome to the other with minimal diffusion, a hallmark of superior cutting technique and favorable internal structure.

Owning this chrysoberyl represents an investment in both beauty and craftsmanship, chrysoberyl ranks high on the Mohs hardness scale which affirms its durability for daily wear and long term retention of polish, the lack of treatments enhances collectability for connoisseurs who prioritize natural material provenance, the Tanzanian origin contributes to documented supply chain transparency which is increasingly important for high quality gemstones, and the precise cabochon execution demonstrates expert lapidary decision making that balances weight retention with optimal optical performance. From a technical valuation perspective, the combination of a well centered cat s eye band, very very slightly included clarity at eye level, excellent surface finish, natural color, and intact provenance creates a profile that appeals to informed buyers who understand that such pieces command a premium relative to comparably sized non chatoyant material. When set, the stone benefits from settings that protect the girdle and emphasize the face up orientation, a bezel or low profile collet will preserve the optical axis while exposing the dome to directional light, this ensures the cat s eye remains the visual focal point. At The Natural Gemstone Company we prioritize accurate documentation and precise imaging to support purchasing decisions, and we stand behind the technical attributes described for this chrysoberyl as evidence of both intrinsic gemological merit and the skilled craftsmanship applied to present its optical phenomenon to the fullest degree, acquiring this gem is therefore an acquisition of a solid mineral specimen, a finely executed cabochon, and a tangible example of expert lapidary art.