Round Brilliant Cut Blue Sapphire Gemstone

This specimen is a round brilliant cut faceted gemstone exhibiting a vivid, deep royal blue to violet-blue hue. The stone is presented from a top-down pavilion view, resting on a white, foam-like textured surface common in jewelry display cases. The cut features a circular girdle with multiple triangular and kite-shaped facets that converge toward the culet. While the saturation appears high, there is a visible degree of silk or cloudiness throughout the interior, suggesting natural inclusions typical of corundum, although the uniformity of color might also indicate diffusion treatment or synthetic synthesis, such as the Verneuil process, common in contemporary market pieces. The surface appears polished with a vitreous luster, though some minor abrasions and dust particles are visible on the crown facets under magnification. The craftsmanship shows a symmetrical facet alignment, although the slight haziness impacts the overall brilliance. Given its appearance and presentation, this is likely a contemporary cut intended for setting in fine jewelry. A professional gemological lab report would be required to definitively distinguish between a natural heated sapphire, a diffusion-treated stone, or a synthetic lab-grown alternative.