4.36 Ct. Blue Sapphire from Ceylon (Sri Lanka)

From the ancient gem lands of Ceylon Sri Lanka to the careful hands of our cutters and polishers, this blue sapphire tells a story of earth and craft. Formed over millions of years deep within metamorphic rock, the rough crystal emerged with a naturally transparent body tone, ready to reveal its true character. Hand selected by our sourcing team at The Natural Sapphire Company for its depth and clarity, the gem was gently heat treated to enhance its vivid color intensity without obscuring the natural beauty that first caught our eye. The result is a 4.36 carat radiant shape sapphire with precise dimensions of 10.25 x 8.46 x 5.31 mm, cut in a radiant facet pattern that balances brilliance and color saturation, and finished to an excellent polish that allows light to travel through the stone with extraordinary clarity. Evaluated at eye level as eye clean, this sapphire shows none of the typical distractions that can interrupt a gemstone's presence, and its transparent nature gives it a purity and glow that speak of both geology and artistry.

Because of its generous size and exceptional clarity, this sapphire is an ideal choice for a statement piece, whether set as a solitaire ring, a bold pendant, or the centerpiece of a bespoke engagement design. The radiant cut emphasizes the stone's vivid blue, creating flashes of deep royal blue and brighter cornflower tones depending on the viewing angle, and the clean clarity ensures those flashes are uninterrupted by visible inclusions, allowing settings to showcase pure color. At 10.25 by 8.46 millimeters the gem commands attention on the hand, and the 4.36 carat weight provides substantial presence without overpowering elegant designs. Our gemmologists can advise on mounting styles that preserve the pavilion depth of 5.31 millimeters for optimal light return, and our bench will work with you to create a setting that complements the sapphire's natural story and enduring provenance. If you wish to bring this Ceylon sapphire into your collection, our team is ready to discuss design possibilities, certification, and the little details that transform a remarkable stone into a lifetime heirloom.