5.32 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent blue sapphire, certified by GGTL, weighs 5.32 carat and measures 11.03 by 8.72 by 6.11 millimeters. The gem is cushion in shape and presents a mixed brilliant cut, with a clarity grade described as very very slightly included when evaluated at eye level. The color intensity is vivid, and the surface polish is excellent. The sapphire is heat treated, a stable and widely accepted enhancement applied to improve color uniformity and saturation, and the origin is Ceylon Sri Lanka. The Natural Sapphire Company provides the complete documentation that accompanies this stone, confirming the reported weight, dimensions, treatment status, and origin in accordance with GGTL findings.

The mixed brilliant cut has been executed to maximize both depth of color and optical performance, and the specific faceting geometry is central to how this sapphire interacts with light. On the crown the brilliant facet arrangement captures incident light across a broad surface area, channeling it into the stone through a generous table and into the pavilion. The pavilion facets have been arranged to act as precise reflective planes, returning light to the viewer in balanced flashes of brilliance. This combination of brilliant crown facets and a more geometric pavilion produces controlled internal reflection and scintillation, which translates into lively, well defined flashes as the stone or viewer moves. The cushion outline contributes to the perception of depth, permitting the vivid blue hue to appear saturated without looking flat, while the pavilion depth of 6.11 millimeters supports the critical internal angles needed to retain light rather than allowing it to leak through. Because the sapphire is transparent and carries very minimal eye visible inclusions, light transmission is unimpeded, enabling both strong face up brilliance and a pronounced window into the stone that reveals its internal color zoning in a way that enhances perceived richness rather than distracting from it. The excellent polish further refines the performance by ensuring that each facet boundary is sharp and reflective, allowing clean light interplay and crisp scintillation rather than diffuse or hazy return.

In practical terms the cut and proportions of this Ceylon sapphire make it well suited to open and semi bezel settings that allow light to enter from the sides as well as the top, maximizing the optical qualities achieved by the faceting. The mixed brilliant motif provides a versatile balance between sparkle and color depth that will read as vivid blue under a variety of lighting conditions, including natural daylight and warm indoor illumination. Heat treatment in this example has been applied in a manner consistent with industry standards, improving the stone’s visual stability and color saturation without compromising durability, and the GGTL report documents this treatment. For care, routine gentle cleaning with warm water and a mild detergent will maintain the stone’s surface luster, and periodic professional inspection of the setting will ensure the gem remains secure and its facets free of accumulations that could diminish light performance. The Natural Sapphire Company stands behind the technical description and provenance of this sapphire, and can provide further measurements or imagery on request to assist in visualizing how the cut enhances the gem’s natural properties of light reflection and color.