15.93 Ct. Bluish Purple Sapphire from Ceylon (Sri Lanka)

If you have been searching for a single exceptional stone that ends the search for the perfect engagement ring centerpiece or the crown jewel for a serious collector, this 15.93 carat cushion shaped bluish purple sapphire answers that need with authority. Its generous dimensions of 15.56 by 12.94 by 8.79 millimeters give it presence on the finger and stability in a bespoke setting, while the intense color intensity delivers a rich and lively hue that reads as sophistication at every angle. This sapphire is transparent and eye clean with a clarity grade of very slightly included when evaluated at eye level, which means that the integrity of the gem is apparent to the naked eye and the light is free to move through the crystal with minimal interruption. The mixed brilliant cut combines both step facets and brilliant facets to flatter both the depth of color and the surface scintillation, and the excellent polish ensures that every facet edge is crisp and every plane reflects light with precision. Origin is Ceylon, Sri Lanka, a source long cherished for producing sapphires with a particular balance of saturation and brightness, and crucially this stone has no enhancement, offering you natural beauty and authenticity without compromise.

What creates the unmatched sparkle of this sapphire is both what it is made of and how it has been shaped, working together to modulate light in a way few gems can match. Sapphire is corundum, an aluminum oxide crystal that forms in a trigonal lattice, a densely packed structure that allows for strong transmission of light and high refractive index, producing brilliance that catches the eye. The bluish purple hue of this stone originates from trace elements that have become part of its crystal lattice, including iron and titanium with a touch of chromium, that together create rich absorption bands and a complex color palette. The mixed brilliant cut is a masterful response to this material, pairing the pavilion and crown geometry that returns light directly to the viewer with step facets that deepen color and add flashes of contrast. The arrangement of brilliant facets subdivides reflections into a lively pattern of pinpoint flashes known as scintillation, while broad step facets allow the saturated zones of color to breathe and show their depth, the result is simultaneous alive sparkle and voluptuous color. Pleochroism, a natural optical property of corundum, lends the stone a chameleon quality, revealing different blue and purple tones as the gem is rotated, and the very slightly included clarity means those internal features act more like signatures than impediments to light flow. The excellent polish eliminates surface diffusion, allowing light to enter and exit with minimal scattering, increasing both brilliance and fire, and the absence of any enhancement guarantees that you are seeing the true result of the stone’s natural structure and the cutter’s skill.

For someone who wants the search to end, this sapphire from The Natural Sapphire Company fulfills that promise, combining scale, color, clarity, and provenance into one decisive choice. Imagine a bespoke setting that showcases the cushion silhouette and lets pavilion light return through masterful facet work, creating a jewel that reads as both elegant and intensely alive with motion. Collectors will appreciate the natural status and Ceylon origin, the polished finish, and the honest clarity grading, while a couple choosing a lifelong symbol will value the stone’s presence, stability of hue, and the way it catches evening light and daylight alike. We understand your desire for something that communicates permanence and personality, and this 15.93 carat mixed brilliant cut sapphire answers that desire with natural authenticity and optical performance that few gems can match. If you would like to see this sapphire set in proposals for ring designs or reviewed alongside comparable stones for size and intensity, we will prepare detailed renderings and comparisons, ensuring that your final choice is as confident and informed as the stone itself.