0.85 Ct. Blue Sapphire from Tanzania

This 0.85 carat cushion shape blue sapphire measures 5.40 x 4.87 x 3.41 millimeters, and offers a well balanced presence for precision set fine jewelry. The gem is transparent, and it is cut in a mixed brilliant style, with a brilliant facet arrangement on the crown paired with a carefully proportioned pavilion to maximize scintillation and maintain strong color saturation. Depth measures approximately 66 percent of the average of the length and width, a proportion that supports intense face up color without sacrificing light return, and the excellent polish produces sharp facet junctions and crisp reflections. Clarity evaluates as very very slightly included on an eye level assessment, which translates to inclusions that are negligible to the unaided eye and only perceptible under magnification, preserving optimal brilliance and allowing the stone to read clean in most mounting orientations. Origin is Tanzania, and the sapphire has no enhancement, a combination that emphasizes natural formation characteristics and provenance, while delivering an uncompromised presentation of pure corundum properties.

Color is the defining characteristic of this sapphire, classified with intense color intensity in a pure blue hue, and the combination of saturation and tone produces a vivid, saturated face up presence that retains depth when set. The mixed brilliant cutting approach is selected to balance scintillation with color saturation, so that crown facets disperse light into lively flashes while pavilion geometry returns color rich light to the observer. The transparency and excellent polish allow the stone to exhibit consistent color across different lighting conditions, and small inclusions contribute minimal cloudiness, permitting strong light passage and high contrast facet play. Tanzanian origin often yields blue sapphires with clean, concentrated chroma, and this specimen demonstrates that characteristic with a stable, intense blue that neither appears washed out in daylight nor overly dark in incandescent light. The result is a gemstone that commands visual attention through its chromatic intensity and precise faceting, qualities that appeal to connoisseurs who evaluate both optical performance and natural origin.

When considered for jewelry, this sapphire will stand out in any setting, and its technical attributes guide ideal mounting choices. A four or six prong solitaire setting oriented to expose the crown maximizes light access, enhancing scintillation and allowing the intense blue to read brightly across the face of the gem. A halo of high quality white diamonds will increase perceived size and boost contrast, sharpening the sapphire hue, while pavé shoulders can add additional sparkle without competing with the central color. Metal selection is an important variable, because the color interaction between metal and stone alters perceived temperature; platinum or white gold preserves the cool, pure blue, 18 karat yellow gold warms the presentation and can emphasize richer, more classical blue notes, and rose gold introduces a contemporary warmth that softens the overall effect. Given corundum hardness of nine on the Mohs scale, the stone is exceptionally suitable for daily wear, and when set securely it is an excellent candidate for engagement rings and heirloom pieces. The Natural Sapphire Company documents provenance and grading for every natural, untreated sapphire, and this Tanzanian cushion sapphire is presented with detailed information on cut proportions, clarity observations, and the no enhancement status. For the collector or the discerning buyer seeking a technically refined, vibrantly colored sapphire, this 0.85 carat cushion presents an optimal balance of cut, clarity, polish, and uncompromised natural color, and it will reliably dominate the visual narrative of any jewelry design.