0.28 Ct. Greenish Blue Sapphire from Montana

This 0.28 carat round greenish blue sapphire from Montana presents as a technically refined gemstone, measured at 3.99 by 4.00 by 2.58 millimeters, and cut in a mixed brilliant style to optimize both color and light performance. The mixed brilliant approach pairs a brilliant facet arrangement on the crown with a modified pavilion geometry, producing a balance of scintillation and depth that is especially effective for medium color intensity stones. The pavilion and crown angles are calibrated to the stone depth, which is approximately 64.6 percent of the diameter, a proportion that deepens perceived color without inducing excessive windowing or extinction. Excellent polish and precise facet junctions ensure mirror like surface reflectivity, reducing destructive leakage of light at the surface and improving overall light return.

Optically, the stone benefits from its transparency and the very slightly included clarity evaluated at eye level, with inclusions that do not interrupt the path of light or the contrast pattern created by the mixed cut. The facet architecture encourages internal reflection, producing a lively pattern of bright flashes from the crown facets when viewed face up, and well defined contrast facets that give the gem depth from the pavilion. The mixed brilliant design also mitigates strong pleochroic shifts by distributing rays across multiple facets, allowing the greenish tones and blue tones to blend for a stable visual balance in most settings. Heat treatment has been applied to stabilize and even out the medium color intensity, improving saturation while preserving natural character. Origin information from Montana is consistent with the cooler greenish blue hue and typically clean crystal habit, traits that respond well to the precise cutting and polishing executed here. The Natural Sapphire Company presents this gem as a compact, technically considered example of mixed brilliant cutting, ideal for settings where facet precision, polished surfaces, and balanced color are required to produce crisp light return and controlled depth in a small but highly refined stone.