4.31 Ct. Blue Sapphire from Ceylon (Sri Lanka)

A luminous fragment of midnight and dawn, this transparent 4.31 carat blue sapphire arrives like a promise from the sea, held within the refined geometry of an emerald cut, each step facet a corridor of light. With dimensions of 9.69 by 7.60 by 5.89 mm, it offers a substantial but elegant presence that makes it a dream for custom jewelry, whether set as a solitaire, cradled between delicate shoulder stones, or framed in a bespoke halo. Its origin in Ceylon, Sri Lanka, whispers of old world mines and timeless allure, while the vivid color intensity floods each facet with an enduring blue that seems to breathe. Evaluated at eye level with a clarity grade of very very slightly included, and finished with an excellent polish, this stone balances purity and character, a sapphire that feels honest and rare. Heat treated to deepen and stabilize its hue, it arrives ready to become the centerpiece of a design that will be worn and remembered, an heirloom in the making.

At The Natural Sapphire Company we imagine this emerald cut as a canvas for devotion, its broad table and elongated silhouette lending themselves to rings and pendants with clean, architectural lines that still feel soft and intimate. The rectangular profile of the gem allows for precise custom settings, making it ideal for designs that emphasize symmetry, or for artisans who wish to play with contrast between metal and stone. The generous 9.69 by 7.60 mm face provides room to show off the sapphire s play of color and depth, while the 5.89 mm depth ensures secure bezel or prong work without compromise. Picture a hand carved platinum setting that echoes the step facets, or a warm yellow gold embrace that lifts the blue into the light, each choice revealing a different mood from the same brilliant heart. This sapphire invites you to design not just a piece of jewelry, but a story, one that begins with a rare Ceylon gem and grows into a living symbol of love, worn close to the skin, catching light, and keeping secrets for generations.