1.14 Ct. Color Change Sapphire from Ceylon (Sri Lanka)

This 1.14 carat round shape color change sapphire presents precise gemological proportions and a finely executed mixed brilliant cut, with dimensions of 6.07 mm by 6.07 mm by 3.97 mm. Transparent and eye clean when evaluated at eye level, this sapphire exhibits intense color intensity and an excellent polish, with no enhancement, and a documented origin of Ceylon, Sri Lanka. The mixed brilliant faceting strategy combines a brilliant crown with a modified pavilion, producing balanced light return and controlled face up color, while preserving the depth needed to manifest a pronounced color change between lighting environments. Under fluorescent lighting the stone displays a deep blue leaning tone, while under incandescent illumination it shifts toward a vivid violet to purple, a behavior consistent with strong pleochroism and the presence of trace chromophores that influence selective absorption. The round outline and symmetrical girdle geometry optimize optical performance and make this gem an adaptable choice for high quality jewelry mounting.

From a lapidary perspective the mixed brilliant cut used on this sapphire is engineered to maximize both scintillation and saturated color. The crown facet architecture is calibrated to produce crisp facet junctions and lively table return, while the pavilion faceting preserves a measured depth that prevents windowing and enhances the apparent saturation of the core color. Excellent polish across facet planes reduces light diffusion and enhances contrast between reflected and transmitted light, allowing the color change to remain pronounced as the viewing conditions vary. Eye clean clarity at this size is particularly significant because internal features can mute pleochroic and color change effects when they interfere with light paths. The evenness of the faceting and the absence of observable inclusions at typical viewing distances mean that this sapphire will display clean flashes and consistent color zones when set, while the untreated nature of the stone confirms that its color and optical behavior are intrinsic to the material rather than the result of heat or other enhancements.

From an investment and long term appreciation perspective this untreated Ceylon color change sapphire represents a compelling balance of rarity, provenance, and technical quality. Color change sapphires occupy a distinct niche in the colored gemstone market, and stones that combine a clear, intense color shift with eye clean clarity and authentic origin data generally command stronger collector interest and pricing resilience. The absence of enhancement is a primary value driver, because treatments are common in the sapphire market and untreated material that also exhibits dramatic optical effects is comparatively scarce. Provenance from Ceylon, Sri Lanka, a historically reputable source for consistently fine corundum, adds an additional layer of desirability among connoisseurs and investors who prioritize documented origin. Long term appreciation is supported by constrained natural supply, steady demand from collectors and bespoke jewelry designers, and the premium placed on stones that display both aesthetic distinction and technical excellence. The Natural Sapphire Company provides full provenance and quality documentation, which improves marketability and reduces transactional risk for resale or consignment. For buyers seeking a technically superior and investment oriented gem, retaining original certification, keeping condition pristine through careful wear and secure setting, and considering a conservative multi year holding period will enhance the potential for capital appreciation while ensuring the gem continues to deliver exceptional optical performance.