5.03 Ct. Ametrine from Ceylon (Sri Lanka)

This 5.03 carat transparent emerald cut, bi color ametrine measures 12.40 x 8.99 x 5.92 mm, and exemplifies precision cutting and optical control. The stone is executed in a classic step cut with a large rectangular table and a series of broad, parallel crown and pavilion steps that create the characteristic hall of mirrors effect of a high quality emerald cut. The faceting emphasizes parallel facet planes and crisp facet junctions, producing broad flashes of color and deep, controlled light return rather than scintillation typical of brilliant cuts. Proportions have been optimized to balance the ametrine bicolor zoning against face up brilliance, resulting in a clean, stable window through the table that allows the intense purple and golden yellow zones to be read distinctly, while internal reflections enhance perceived depth and saturation. The polish is rated excellent, with smooth facet planes and tight symmetry, and the girdle and facet junctions display expert lapidary control that minimizes light leakage and maximizes center table brilliance.

Color and clarity in this piece are of particular interest to discerning collectors and setters, the color intensity is intense, with a vivid purple amethyst zone transitioning crisply to a golden citrine zone, the bi color separation is natural in appearance and oriented to showcase both colors when set lengthwise. Clarity is described as very very slightly included, evaluated at eye level, indicating the stone is effectively eye clean with only minute internal features visible under close inspection, contributing to a high degree of transparency and lively light performance. Enhancement is limited to heat treatment, used to refine color distribution and saturation while preserving natural zoning characteristics. Origin is recorded as Ceylon Sri Lanka, a provenance noted for producing clean, transparent gemstones. This ametrine sits as an ideal centerpiece for a bespoke ring or statement pendant, the emerald cut geometry lending itself to both classic settings and contemporary minimalist mounts, and the controlled step faceting ensures the stone remains the visual focus. The Natural Gemstone Company presents this gem as a technical exemplar of cut and color harmony, a piece where craftsmanship amplifies natural bicolor character to deliver a gemstone that commands attention in any connoisseur collection.