Diaspore – 12.50 Carats, Color Change, and a Stone That Never Looks the Same Twice
Some gemstones are beautiful. Others are genuinely unforgettable. This 12.50-carat diaspore is, without question, the latter.
The defining quality of diaspore is its color change – a rare optical phenomenon that, in this quality and at this size, places the stone in an exceptionally small category of collectible gems. In daylight or cool natural light, the stone displays a vivid yellowish green – fresh, luminous, with a depth that recalls the finest chrysoberyls. Shift the light source to incandescent or warm evening light, and something remarkable happens: the green retreats and a warm, gentle pinkish brown emerges in its place. Not a subtle shift – a genuine transformation. One stone, two identities, and an entirely different mood depending on where you stand and what light surrounds you.
Diaspore – also known commercially as Zultanit – is mined in only one location on earth: a single deposit in the foothills of the Taurus Mountains in Turkey. Global supply is, by nature, limited. Stones above 10 carats with a well-defined color change and high clarity are rare even among specialists who dedicate their careers to colored gemstones. This stone weighs 12.50 carats, shows very minor inclusions entirely appropriate to its size, and delivers a color change that performs across the full range of lighting conditions.
At 15.35 x 12.15 x 8.29 mm, this is a gem with genuine physical presence. The faceted oval cut maximizes light intake and, by extension, the intensity of the color shift, while the soft outline of the shape suits the natural elegance of the stone beautifully.
Certified by the GIA – Gemological Institute of America, the world's foremost gemological authority, and the DeGEB – Deutsche Gesellschaft für Edelsteinbewertung. Two independent institutions confirming the quality and authenticity of one of the rarest color-change gemstones available today.
For collectors, for connoisseurs, for anyone who wants a stone that continues to surprise – this diaspore is exceptional in every sense.
