1.02 Ct. Blue Sapphire from Tanzania

This Tanzanian cushion blue sapphire from The Natural Sapphire Company is a precisely measured, naturally unenhanced gem that combines intense color with careful cutting and finish. The stone weighs 1.02 carats and measures 6.87 by 5.28 by 2.87 millimeters, presenting a balanced table and depth for its weight. It has been faceted in a mixed brilliant style, which incorporates both step and brilliant facet arrangements to emphasize color and scintillation. The clarity is graded as included, evaluated at eye level, indicating the presence of natural internal characteristics that are visible without magnification. The polish is excellent, providing a smooth, reflective surface that maximizes light return and surface brilliance. No enhancements have been applied to alter its color or clarity, and its origin is documented as Tanzania.

The mixed brilliant cutting style and the intense color intensity of this sapphire produce distinct and attractive behavior under varied lighting conditions. In bright, direct daylight the gem reads as a deep, saturated blue with a velvety appearance, the larger table and well-proportioned pavilion contributing to a stable face-up color and deep blue body tone. The mixed facets break and reflect daylight into a lively display of blue flashes across the crown, while occasional purplish secondary tones become noticeable at certain angles due to subtle pleochroism common in corundum of this hue. Under cool white LED lighting the stone shows crisp scintillation, with the brilliant facets accentuating small, lively flashes of light and a slightly lighter, more electric blue appearance on the facet junctions. In warm incandescent or candlelight the sapphire reveals warmer royal blue and slight violet undertones, the rich color taking on a more saturated and intimate character as the warmer spectrum emphasizes deeper blue wavelengths. In low ambient light the gem maintains a strong presence because of its color saturation, though the intensity of sparkle diminishes; the result is a concentrated blue center with subdued peripheral reflections. Under spot or display lighting, such as a jeweler’s lamp or gallery spotlight, the mixed brilliant cut produces pronounced contrast and scintillation, showing quick, bright flashes from the crown facets against the deeper blue of the pavilion, and making the polish quality particularly evident as crisp facet outlines and sharp light return.

Practical considerations for use and presentation reflect the sapphire’s gemological strengths. The included clarity grade contributes to the gem’s character and a natural, unaltered appearance, and the visible inclusions can interact with light to create areas of depth and internal texture rather than detracting from overall attractiveness. The excellent polish ensures that surface reflections are clean, enhancing both brilliance and the perception of color under varied illumination. As a corundum species, sapphire has a hardness of nine on the Mohs scale, making it highly suitable for everyday wear in rings, pendants, and other jewelry that will see frequent use, provided appropriate protective settings are chosen. The cushion outline and the 6.87 by 5.28 millimeter dimensions make this sapphire versatile for a range of mounting styles. Settings in white metals will emphasize the stone’s cool blue and scintillation, while yellow or rose gold can warm the appearance and draw out the sapphire’s richer blue and violet notes. The Natural Sapphire Company presents this sapphire as a well-documented, naturally sourced gem that offers a combination of intense, natural color, precise cutting, and durable material properties, suitable for custom design work or ready-to-set settings where the interaction of cut, color, and light will be appreciated.