0.61 Ct. Blue Sapphire from Tanzania

This 0.61 carat, asscher cut, octagonal blue sapphire has been faceted to emphasize controlled light return and concentrated color depth, producing a refined optical performance that appeals to discerning buyers. The asscher step facet architecture, with its concentric square steps on the crown and pavilion, creates a hall of mirrors effect, channeling light in a series of planar reflections rather than the dispersed scintillation typical of brilliant cuts. The balance between the crown facet angles and the pavilion depth of 3.16 millimeters is engineered to favor internal reflection, so light entering through the table and broad step facets is reflected across multiple pavilion planes and returned as sustained flashes of vivid blue. The relatively compact table and even step proportions minimize windowing, preserving color saturation across the stone face, while the octagonal outline sharpens contrast at the corners and produces crisp facet junctions that accentuate the asscher geometry.

Measured at 4.55 by 4.41 by 3.16 millimeters, with a clarity grade of very slightly included at eye level, this transparent Tanzanian sapphire exhibits minimal internal disturbance to interrupt the step facet reflections, and the excellent polish further reduces surface diffusion, maximizing mirror like facet interplay. No enhancement has been applied, so the vivid color intensity is entirely natural, a feature increasingly prized by collectors and connoisseurs. The controlled step cut and strong color concentration make this gem ideal as a precision set center for a fine ring or as a sophisticated accent in a geometric setting, where the faceting will read with architectural clarity. The Natural Sapphire Company presents this stone as an example of deliberate cutting that prioritizes color purity and engineered light dynamics, a piece that will display restrained, directional flashes under movement and a deep, consistent blue when viewed face up. For those specifying mounting, an open backed setting will allow maximum light entry to benefit from the asscher reflection pattern, while a secure prong or bezel with minimal profile will retain the gem focus without obscuring facet symmetry.