0.73 Ct. Color Change Sapphire from Tanzania

This 0.73 carat pear shape color change sapphire from Tanzania offered by The Natural Sapphire Company is a study in precise proportion and optical performance, dimensions 6.93 x 4.71 x 3.00 mm. Cut to a mixed brilliant faceting scheme, the crown displays carefully calibrated kite and star facets that transition into a pavilion composed of modified brilliant facets, a configuration chosen to balance scintillation with strong color saturation. The cutter preserved depth at 3.00 mm to optimize light return for a stone of this size, producing an intense color intensity that shifts subtly between lighting environments, with a cooler, vivid blue under fluorescent conditions and a warmer blue violet under incandescent illumination. Clarity is graded slightly included at eye level, and the polish is excellent, yielding crisp facet junctions and lively mirror reflections without the hazing or surface residue that can mute color. Importantly, this sapphire has received no enhancement, presenting its natural color chemistry and inclusions intact, a quality that collectors and connoisseurs prize for provenance and long term stability.

The internal features of this sapphire serve as natural identifiers, not defects, and they contribute to the gem personality and color dynamics. Under magnification you will note oriented needle inclusions and minute crystal particulates that align with growth directions, together with tiny feathered planes that remain localized and do not compromise durability when set with proper prong protection for the pear tip. These oriented inclusions can enhance the depth of color by scattering light in specific directions, a phenomenon that accentuates the color change effect when illumination shifts. The inclusion pattern is consistent with Tanzanian corundum growth, and because the stone is unenhanced, these features provide a useful internal map for future identification and certification. The combination of slightly included clarity, intense color, mixed brilliant faceting, and excellent polish results in a small but visually commanding gem, ideal for a bespoke ring or pendant where the pear silhouette and calibrated proportions will maximize both the color shift and the lively facet scintillation.