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This 2.51 carat natural sapphire from Diego, Madagascar displays a captivating blend of opalescent teal, blue, and green hues that shift subtly with changing light. Cut in a precision shield step cut, the gemstone combines strong geometric architecture with broad, mirror-like facets that emphasize both depth and color. The untreated crystal exhibits a soft internal glow characteristic of fine opalescent sapphires, while the shield silhouette provides a distinctive contemporary profile ideal for custom engagement rings and bespoke fine jewelry. With its substantial size, rare color palette, and precision cutting, this sapphire offers exceptional individuality for collectors and designers seeking a unique natural gemstone.