1.00 Ct. Bi Color Sapphire from Ceylon (Sri Lanka)

If you are searching for a single stone that ends your quest for a truly special sapphire, this 1.00 carat oval bi color sapphire from Ceylon is designed to answer that need. Many customers tell me they want a gem that feels significant on the finger, but remains wearable every day, and the one carat weight hits that balance perfectly. One carat is a meaningful milestone in the world of gemstones, where size, presence, and market perception intersect. At precisely 1.00 carat, this oval sapphire registers as both a personal statement and a clear point of rarity, a size that collectors and couples alike recognize as substantial. Because weight is one of the most direct drivers of rarity and value in precious stones, choosing a one carat sapphire like this one means you are selecting a gem that is inherently more desirable than many smaller stones, while still offering comfortable proportions for an elegant engagement ring or a standout pendant.

Beyond the headline weight, the gem’s proportions and cutting style work together to maximize the visual impact of its one carat weight. Measuring 6.27 x 5.11 x 3.86 mm, this oval sits beautifully on the hand, projecting the ideal table size while maintaining depth for internal color play. The mixed brilliant cut that has been applied to this piece combines the scintillation of a brilliant style with the face up spread of more traditional step elements, and because the cutter retained weight during faceting, the result feels generous without appearing bulky. Clarity is excellent, graded as very very slightly included when evaluated at eye level, which means the stone reads as clean to the naked eye and allows the full benefit of the weight to translate into brilliance and liveliness. The excellent polish ensures every facet edge reflects light with clarity, so that the one carat mass truly sings, showcasing its medium intense color intensity and its rare, dramatic bi color character that shifts from golden honey tones to cool blue flashes.

The bi color nature of this Ceylon sapphire is one of the reasons that its one carat weight matters even more. Bi color sapphires are prized for their natural zoning and color transitions, and as size increases, so does the opportunity for dramatic, pleasing color contrast across the stone’s surface. At one carat and with these proportions, you will see both the warm yellow gold and the cooler blue interact across the crown and pavilion, offering an ever changing appearance as light and viewing angle change. For engagement rings, this means a ring that feels alive, a gem that complements skin tones and metal choices in different ways. If you are a collector seeking rare and characterful material, one carat represents a point where color zoning is large enough to appreciate the full palette, but not so large as to be hard to place in everyday jewelry. Because this sapphire has been heat treated, a common and accepted enhancement that stabilizes and enriches natural sapphires, you gain the best of both worlds, a dramatically attractive gem with the added assurance that the treatment is standard and transparent.

At The Natural Sapphire Company we understand that weight is not just a number, it is central to how a gem performs, how it is perceived, and how it holds value over time. This 1.00 carat oval from Sri Lanka comes with the provenance and gemological details that matter to buyers who want confidence in their choice. The combination of origin, cut, and one carat weight positions this sapphire as an excellent option for an engagement ring that will be noticed, cherished, and passed forward, and as a collector’s piece that will occupy a special place in any cabinet. Practical considerations such as the gem’s measurements make it straightforward to design a setting that enhances the bi color effect, for example a delicate bezel to highlight the oval outline, or a four prong head that allows maximum light to enter and reveal the subtle color shifts. If you are seeking a gem that resolves your search, the one carat bi color sapphire we offer brings together rarity, visual drama, and everyday practicality, all backed by our expertise and commitment to guiding you to the perfect choice.