6.40 Ct. Yellow Citrine from Ceylon (Sri Lanka)

This transparent 6.40 carat round citrine measures 11.91 by 12.01 by 8.38 mm, and is presented by The Natural Gemstone Company. The cutting style is faceted with a mixed brilliant design, combining a brilliant crown with carefully proportioned pavilion facets to maximize return of light while preserving rich body color. The facet junctions are crisp and symmetrical, and the polish is excellent, yielding smooth facet planes that enhance internal reflections. Clarity is graded eye clean at normal viewing distance, so the light path is uninterrupted by visible inclusions, and the stone displays consistent intense yellow color across the table and crown. There is no enhancement, and the material originates from Ceylon Sri Lanka, which contributes to the gemological profile through its saturated golden hue and natural transparency.

Under variable lighting the mixed brilliant proportions produce distinct optical behaviors that will appeal to technically minded buyers. In strong daylight the citrine exhibits even, saturated color with broad, luminous flashes across the table and crown, attributable to the interplay of large crown facets and the pavilion facet geometry. Under cool LED illumination the stone reveals crisp pinpoint scintillation around the girdle, and the intense yellow appears slightly cooler but maintains depth due to the excellent polish and internal clarity. Under warm incandescent lighting the citrine shifts toward a warmer golden tone, with increased apparent saturation and more pronounced contrast between bright facet flashes and deeper near pavilion areas. In diffuse indoor light the gem presents a uniform glow, highlighting its clean color distribution and making it ideal for settings that benefit from constant visual warmth. Backlighting and directed spot lighting accentuate internal facet reflections and create a layered brilliance that emphasizes the mixed brilliant architecture. For mounting recommendations, an open gallery or low bezel will allow maximum light entry and preserve the stone s brilliance, while a well calibrated prong setting will showcase the pavilion depth and maintain secure positioning. This citrine demonstrates balanced optical performance, refined craftsmanship, and natural origin, making it a technically excellent choice for collectors and designers seeking a vivid, eye clean yellow gem.