2.59 Ct. Yellowish Green Chrysoberyl from Tanzania

This 2.59 carat transparent chrysoberyl, cut in an asscher octagon shape, is a technically considered and visually precise gemstone from The Natural Gemstone Company. The stone measures 7.37 x 7.06 x 5.17 millimeters, yielding a calculated depth percentage of approximately 71.7 percent based on the mean diameter. The cutting style is faceted with an asscher cut geometry, which employs concentric step facets on the crown and pavilion and clipped corners to produce the classic square octagon outline. Clarity has been evaluated as very slightly included at eye level, meaning that inclusions are minimal and generally do not interrupt the step facet reflections when viewed in typical wear positions. The gem displays a yellowish green hue with medium color intensity, an excellent polish, and no enhancements, confirming that the color and surface finish are entirely the result of the original rough material and the cutter s precision.

From a gemological and cutting perspective the asscher cut applied to this chrysoberyl was chosen to take full advantage of the mineral s optical constants. Chrysoberyl s relatively high refractive index and strong adamantine luster respond well to precise step facet geometry, producing a hall of mirrors effect that emphasizes clarity and depth of color rather than spectral scintillation. The cutter balanced crown and pavilion plane placement and facet proportions to optimize light return for chrysoberyl s refractive behavior, resulting in clean, parallel facet reflections across the table and well defined step lines toward the girdle. The medium color intensity registers as a stable face up yellowish green, which is consistent with iron related chromophores rather than treatment induced modifiers. Because the piece is slightly deeper than average, the face up presentation leans toward a tad more saturation and controlled brilliance, a desirable trade off for buyers who prioritize tone and depth without excessive windowing.

The Tanzanian origin of this chrysoberyl materially contributes to its desirability and market value. Tanzanian deposits produce chrysoberyls that are often characterized by excellent transparency and well balanced chromophores, and the regional geology favors both primary pegmatitic crystallization and secondary alluvial concentration, allowing experienced cutters to select clean, well formed material. Provenance from Tanzania signals to collectors that this crystal likely developed under metamorphic conditions and was liberated into alluvium where it could be recovered with minimal mechanical stress, preserving crystal integrity. The fact that this 2.59 carat asscher is natural and untreated enhances its appeal for connoisseurs who value traceability and stability, because no heat or diffusion processes have been applied to alter color. Practically, chrysoberyl s hardness of approximately 8.5 on the Mohs scale and its robust toughness make it an excellent candidate for an everyday ring, and the asscher octagon shape with clipped corners presents clean geometry for four prong or bezel settings that protect the girdle while maximizing the hall of mirrors effect. For clients seeking a technically excellent, naturally colored chrysoberyl with documented Tanzanian origin, The Natural Gemstone Company offers this stone as an investment in both material quality and artisanal cutting discipline, and we can provide additional photographic angles, viewing recommendations, and independent gemological documentation on request.