1.41 Ct. Bluish Green Sapphire from Montana

This transparent 1.41 carat round bluish green sapphire presents exacting measurements of 6.68 by 6.63 by 4.43 millimeters and exhibits a mixed brilliant cut that has been executed to balance color saturation with lively light return. The mixed brilliant approach combines a classical brilliant style crown with a modified pavilion geometry, producing a cut that emphasizes both scintillation and depth of tone. The slightly deeper pavilion proportions, at approximately 66.6 percent of the average diameter, concentrate the stone s absorption pathways to intensify the teal to bluish green hue typical of Montana material, while the well calibrated crown facet angles produce crisp pinpoint reflections across the table. Clarity is graded very slightly included at eye level, meaning minor natural features are present but do not compromise the overall transparency or the integrity of facet reflections. Polish is excellent, delivering razor edged facet junctions and high fidelity mirror planes that maximize internal contrast and the definition of patterned light return. The piece has been heat treated, a stable enhancement commonly applied to corundum to remove silk and improve color evenness, and its origin in Montana is consistent with the iron and titanium chemistry that yields these distinctive bluish green tones.

From a faceting and finish perspective this sapphire is engineered to perform both as a solitaire and as a center for more complex settings, because the mixed brilliant strategy yields an interplay of small high intensity flashes and larger broad flashes. The crown facet arrangement creates a tight star and bezel facet interaction that generates scintillation at small viewing angles, while the modified pavilion facets deepen the central color and produce notable color zoning under variable tilt. The very slightly included clarity grade means inclusions are minimal and typically relegated to lower pavilion locations where they have limited influence on surface brilliance. Because the polish quality is excellent, light transmitted into the stone is scattered and returned with minimal diffusion loss, so facet boundaries remain distinct and scintillation remains energetic rather than soft. These cutting and finishing choices make the stone behave like a live, dynamic gem, offering high contrast in directional light and a saturated, uniform body color in broad illumination. The heat treatment is stable and contributes to the intense color intensity that you see, without materially altering the crystalline habit or the stone s structural soundness.

How this gem will present under varied lighting scenarios is instructive for design and daily wear. In cool daylight or under a natural daylight simulator the sapphire displays its truest bluish green character with a deep, rich saturation across the table and defined pale to dark contrast patterns toward the girdle. Directional sunlight accentuates scintillation and produces sharp flashes of lighter blue green as the crown facets act as minute mirrors, delivering lively sparkle that contrasts with the deep central tone created by the pavilion. Under warm incandescent light the stone shifts subtly toward the greener component of the teal range, appearing slightly warmer and more saturated because of the increased red and yellow spectral content, while under cool LED or fluorescent sources the blue component becomes more pronounced, giving a crisper, cooler appearance. In low ambient light the deeper pavilion proportions preserve color saturation so the gem reads as a velvety teal or deep greenish blue, and under intense spot illumination small pinpoint reflections become highly visible against the darkened body color. For settings to optimize these optical behaviors we recommend an open gallery or light admitting head to preserve maximum light entry and return, and a low bezel or prong setting to favor both security and optical performance. As with all our stones at The Natural Sapphire Company the combination of measured proportions, thoughtful mixed brilliant faceting, very slightly included clarity at eye level, intense color intensity, excellent polish and documented Montana origin results in a gem that is technically refined and visually compelling across lighting conditions.