10.18 Ct. White Sapphire from Ceylon (Sri Lanka)

There are stones that catch the eye, and then there are stones that seem to hold the very quiet of a moonlit sky within their facets. This is one such stone, a transparent C Dunaigre certified colourless sapphire, weighing 10.18 carats, cut in the regal Asscher octagon form, with dimensions of 12.41 by 12.35 by 7.73 millimeters. The cutting style is faceted, the Asscher cut bringing a series of concentric, geometric stair steps that draw light inward and then send it back like a secret told twice. The surface shows an excellent polish, each facet a small mirror, and the clarity is graded very slightly included when evaluated at eye level, which allows the stone to sparkle with purity while retaining a whisper of the earth that formed it. Origin is Ceylon, Sri Lanka, a place long associated with sapphires of soul quiet and refined beauty, and the gem has received a gentle heat treatment enhancement that refines its natural clarity and color without veiling its inherent character.

Rarity is a language of scale and tone, and in both measures this white sapphire speaks in an uncommon register. A colourless sapphire of ten carats is a rarity among rarities, because most white sapphires at this size carry the faintest memory of tint, or they lack the kind of clean, crystalline transparency that transforms a gem into a window. Here the colourless color intensity opens the way for a luminous, almost liquid brilliance that is rare in sapphires of this magnitude. Compare this to more commonly seen smaller stones and those with subtle undertone, and the difference is like comparing a single candle to a lantern set against a night sea. The Asscher cut amplifies this rarity by its very geometry, the octagon outline and stepped pavilion creating a hall of mirrors effect that is both architectural and lyrical. Each facet is a room in which light moves and lingers, making the stone seem larger than its measurements, which already speak of presence. These dimensions, twelve point four one by twelve point three five by seven point seven three millimeters, combine breadth with depth in a way that accommodates a bold solitaire, a striking three stone setting, or an heirloom piece meant to catch light and memory for generations.

To wear this sapphire is to carry a clear poem on the hand, a jewel that can promise and remember in a single glance. The provenance from Ceylon, the C Dunaigre certification, the careful Asscher faceting, the excellent polish, and the very slightly included clarity at eye level together create a narrative of authenticity and refined rarity. At The Natural Sapphire Company we imagine this gem set at the heart of a pledge, a vow, or a celebration, and we are prepared to craft a setting that honors its geometry, its size, and its colourless brilliance. Because it is large and colourless, it commands designs that let the light move freely, so consider settings that show the pavilion and allow the step facets to breathe. This is not a stone to hide, it is a stone to commemorate. It is perfect for an engagement that prefers quiet confidence over ostentation, for an anniversary that marks the endurance of feeling, or for a collector who seeks a subtle masterpiece that is uncommon in both scale and purity. Allow us to walk with you through choices of metal, of mounting style, and of provenance documentation, and to ensure that this Ceylon white sapphire becomes not only a jewel, but a part of your story.