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

This 1.80 carat, emerald cut, color change sapphire from The Natural Sapphire Company is a technically refined gem designed for connoisseurs who value both optical performance and natural provenance. The stone measures 7.84 by 5.49 by 4.21 millimeters, exhibiting the long, rectangular table and step facet geometry characteristic of an emerald cut. The step cutting produces broad, planar facet windows that emphasize the stone's transparency and color fields, rather than the small glittering facets of brilliant cuts. With a clarity grade of very slightly included, evaluated at eye level, inclusions are minimal and play no substantive role in obscuring the stone's color change, instead confirming natural origin and adding to the gemological character. The sapphire is transparent, with vivid color intensity and an excellent polish, and it is untreated, with no enhancement, attributes that significantly increase desirability among collectors and jewelers who prioritize intact natural chemistry and stable color. Origin is Ceylon, Sri Lanka, a source known for producing clean material with saturated but refined hue, and the stone is supplied with Other certified Color Change documentation from The Natural Sapphire Company.

From a gemological perspective, this color change sapphire demonstrates a pronounced optical response to different lighting environments, an effect amplified by the emerald cut geometry. Step facets create large, contiguous color planes that allow the eye to register coherent shifts in hue rather than scattered flashes. In cool natural daylight, observers can expect the stone to present cool blue to blue green tonalities with a cornflower clarity and crisp saturation, while in incandescent or warmer artificial lighting the same table will display a transition toward warmer purplish to reddish violet tones, producing a distinct color change rather than a mere shift in intensity. Pleochroic tendencies are moderated by the broad facets, so color change appears as a strong, uniform transformation across the table rather than isolated flashes. The vivid color intensity ensures that both phases of the change read as saturated and lively, and the excellent polish maximizes facet reflections so that the transition is clean and visually striking. The absence of heat treatment or diffusion means the color chemistry is natural, relying on trace element balance, which collectors and technical buyers will recognize as a hallmark of authenticity and long term color stability.

When set in jewelry this sapphire adapts elegantly to different skin tones, due to the duality of its cool and warm presentations and its vivid, saturated character. Against cool skin tones, including fair skin with pink undertones, the cool daylight phase will harmonize, producing a refined, integrated appearance, while the warmer incandescent phase introduces a complementary warmth that flatters and avoids washing out the complexion. For warm skin tones, including olive and golden undertones, the warmer purple to red shift reads as a flattering, tonal continuation that enhances natural warmth, while the cool phase provides striking contrast for a modern, high definition look. Neutral complexions will benefit from the stone's versatility, with both phases offering balanced, wearable color. On darker skin tones the vivid intensity becomes especially compelling, presenting strong color presence and legibility even in lower light, while on very fair skin the warmer phase can add desirable depth and life. From a setting perspective, white metals such as platinum and white gold emphasize the cool phase and the stone's clarity, magnifying the cornflower to blue green aspect, while yellow and rose gold settings pull forward the warmer purple and red tones. A prong mounting or low bezel that leaves the pavilion exposed will maximize light interplay and the perceptibility of the color change, whereas a full bezel can mute the transition. Complementary side stones such as step cut baguette diamonds or channel set melee mirror the emerald cut geometry and support a cohesive visual language. Given the 7.84 by 5.49 millimeter footprint, the stone is well proportioned for a classic solitaire ring, a refined three stone design, or a pendant that leverages the color change in motion. For technical buyers and collectors seeking a naturally occurring, vividly responsive color change sapphire with precise cutting and transparent gemological credentials, The Natural Sapphire Company presents this Ceylon emerald cut as an exceptional choice.