11.58 Ct. Bi Color Ametrine from Madagascar

Presenting a transparent 11.58 carat bi color ametrine, precisely faceted in an emerald cut, dimensions 13.98 x 10.12 x 11.21 mm, cut to emphasize the parallel step facets that define an emerald profile and to articulate a clean separation between the citrine yellow and amethyst purple zones. The cutting style is faceted, with a broad table and well proportioned crown planes that lead into stepped pavilion facets, corner truncations that reduce chipping risk and enhance light return. Clarity is very very slightly included when evaluated at eye level, permitting exceptional transparency and minimal visual distraction, polish is excellent, and color intensity is medium, producing a balanced saturation that reads vividly across the table without overpowering brilliance. Origin is Madagascar, enhancement by controlled heat treatment is declared, the heat treatment has been applied to stabilize and optimize color distribution, and the result is a gem that presents a clear, even bi chromatic band visible without magnification.

From a craftsmanship perspective this piece demonstrates meticulous facet alignment and symmetry, the step cutting preserves the stone exhibits natural pleochroism, and the clean lines of the emerald cut produce broad color flashes and a refined mirror like luster. At Mohs hardness 7 quartz based ametrine combines good abrasion resistance with the need for sensible handling, routine care with warm soapy water and a soft brush will maintain the surface polish, avoid exposure to prolonged high heat or harsh chemicals to protect the color interface. Over the years the stone will continue to captivate through its inherent dichroism and the way the faceting modulates light across the bi color interface, the medium color intensity and very very slight inclusions ensure enduring visual appeal while preserving optical depth, and the excellent polish and accurate cutting will retain strong light performance in settings that allow light access to the table and crown. The Natural Gemstone Company stands behind the quality and origin of this Madagascar ametrine, offering a piece that is suitable for bespoke jewelry and for collectors seeking a statement gem that will age gracefully and retain its natural beauty.