10.63 Ct. Yellow Sapphire from Ceylon (Sri Lanka)

There are gemstones that speak in an accent of antiquity, and then there are stones that carry entire pages of history within their glow, this C.Dunaigre certified Yellow sapphire from Ceylon is firmly in the latter category. Delivered to you by The Natural Sapphire Company, this transparent 10.63 carat cushion shape yellow sapphire measures 12.11 x 12.08 x 8.30 mm, and it embodies the storied legacy of Sri Lankan gem cutting and royal patronage that stretches back centuries. Ceylon sapphires have long been prized by monarchs and connoisseurs for a clarity and color that seems to capture the tropical light of their island origin, and this gem continues that tradition with an intense, sunlit yellow that is unmistakable at first glance. The cushion form itself is a classic silhouette that traces its roots to antique jewelry, a forgiving and noble shape that flatters many settings, and that imparts a sense of permanence and continuity to any piece it adorns.

Beyond its historical resonance, the optical performance of this sapphire is where past and present meet in visual harmony, the gem has been masterfully fashioned with a mixed brilliant cut, a combination that balances large, pleasing facets with precise pavilion faceting to maximize scintillation and light return. At an eye clean clarity grade when evaluated at eye level, there are no internal distractions to interrupt the path of light, so every facet becomes a window that intensifies the yellow saturation rather than obscuring it. The excellent polish ensures crisp facet junctions and lively reflections, making the surface lively under varied lighting conditions. When you compare this yellow sapphire to more common yellow gemstones like citrine and yellow topaz, the differences are striking, citrine commonly offers warm color at accessible price points, but it lacks the refractive strength and durable corundum structure that make a sapphire both brilliant and enduring. Yellow topaz can show good fire and saturation, yet it is softer than sapphire and thus more susceptible to wear, both of these alternatives are more plentiful, and so their colors and sizes rarely achieve the same collector appeal as a fine Ceylon sapphire of this weight and saturation.

Comparisons to diamond are inevitable when discussing brilliance, and while diamonds remain unmatched for their dispersion and fiery flashes because of their higher refractive index, the appeal of a saturated yellow sapphire is of a different, equally persuasive nature, a diamond often dazzles with icy white light and fire, a yellow sapphire converses in color, its brilliance is carried by the depth of its hue and the way the mixed brilliant cut channels light through rich saturation rather than relying solely on spectral dispersion. The refractive index of corundum gives a lively, persistent shimmer that emphasizes the gem's color, and at 10.63 carats this sapphire makes a visual impact that few diamonds of equivalent presence can match without very significant cost. The heat treatment that this gem has undergone is a widely accepted enhancement in the world of sapphires, it stabilizes and intensifies color while preserving the stone's natural integrity, and because of the gem's eye clean clarity, the treatment works to reveal and refine what nature intended rather than to disguise flaws.

For a collector or a future heirloom piece, this Ceylon yellow sapphire represents a rare synthesis of history, craftsmanship, and visual poetry, cushion shapes were favored in antique and Victorian settings, and they translate exceptionally well into contemporary bespoke designs where the emphasis is on classic elegance over fleeting trends. The combination of an intense yellow color intensity, exacting mixed brilliant cut, and excellent polish gives this stone the kind of presence that can define a ring, pendant, or bespoke brooch for generations. We at The Natural Sapphire Company offer this gem with the assurance of C.Dunaigre certification, a level of provenance that matters to discerning buyers who want clarity about origin and treatment. If you are seeking a centerpiece that connects you to a long lineage of gem tradition, while offering a unique, modern brilliance that sets it apart from more common yellow gemstones, this 10.63 carat Ceylon cushion yellow sapphire is an exceptional choice.