1.20 Ct. Bluish Purple Sapphire from Madagascar

One beautiful transparent 1.20 carat asscher octagon shape bluish purple sapphire, dimensions 6.60 x 5.61 x 3.46 mm, faceted cutting style, asscher cut, clarity grade slightly included evaluated at eye level, intense color intensity, excellent polish, enhancement heat treated, origin Madagascar, offered by The Natural Sapphire Company. The gem displays a saturated bluish purple hue that is evenly distributed across the table and pavilion, with clean color zoning and a level of transparency that allows light to penetrate deeply before being returned to the eye. The asscher octagon outline combines strong symmetry with precise facet geometry, producing well defined planes that work in concert with the sapphire crystal structure to maximize optical performance.

The sparkle of this sapphire arises from the intrinsic properties of corundum and the quality of its cut and polish. Corundum, the mineral species that forms sapphires, has a refractive index in the range of approximately 1.759 to 1.779 and a modest birefringence of about 0.008 to 0.010, together creating a balance of brightness and internal contrast that is particularly well suited to faceted step cuts. The asscher style uses concentric, square based step facets that create a hall of mirrors effect, a repeating play of light and dark planes that enhances scintillation and apparent depth. With an excellent polish, facet junctions are crisp and surface scattering is minimized, allowing the high refractive index to project concentrated flashes of light from each facet junction. The result is a refined, lively scintillation rather than a diffuse sheen, and because the stone is transparent with only slight inclusions at eye level, light travels through multiple internal reflections before exiting, producing a multi faceted brilliance that few other shapes deliver as consistently.

The combination of intense color, thoughtful asscher facet architecture, and superior surface finish yields a visual performance that is both vivid and controlled, suitable for settings that emphasize clarity of line and color saturation. Heat treatment has been applied to stabilize and intensify the hue, a common and accepted practice that enhances the gem without compromising structural integrity. For those evaluating gemstones on optical merit and craftsmanship rather than hyperbole, this 1.20 carat asscher octagon bluish purple sapphire from Madagascar represents a clear example of how material properties and expert cutting converge to create exceptional sparkle, available through The Natural Sapphire Company.