A striking 23.70-carat cushion-cut tourmaline from Afghanistan, displaying a vivid lagoon color with rich bluish green to teal green tones. The stone has a well-balanced cushion outline with softly rounded corners and excellent depth, giving it a bold and impressive presence. Its loupe clean clarity allows the strong color and lively faceting to stand out beautifully. Untreated and naturally colored, this tourmaline is an exceptional gemstone with superb size, clarity, and visual appeal.