6.60 Carat Natural Loose Bicolor Ametrine Stone Cushion Cut Brazilian Gemstone

Mined from the famous gemstone fields of Brazil, this 6.60 Carat Natural Loose Bicolor Ametrine showcases a seamless, natural transition between deep violet amethyst and warm golden citrine within a single crystal. Precision-crafted into an elegant cushion cut, its soft pillow-like contours and balanced facet arrangement accentuate the striking dual-color zone, maximizing edge-to-edge light reflection and lively fire. The stone boasts superior eye-clean clarity and exceptional crystal transparency, allowing light to flow fluidly through both hues without dark extinction areas or clouding. Completely natural, unheated, and untreated, this captivating 6.60-carat Brazilian gem offers a rare study in natural color zoning, making it an extraordinary centerpiece for a bespoke ring, a unique pendant, or a distinguished gemstone portfolio.