21.52 carats Natural Blue Topaz | Cushion – 15 × 15 × 11.5mmA vibrant blue topaz displaying a fresh, luminous sky blue tone with exceptional clarity. The color appears crisp and evenly distributed, offering brightness without heaviness. Cut in a well proportioned cushion shape, the faceting produces strong internal reflections and energetic light performance. The broad surface enhances brilliance while maintaining clean transparency. At 21. 52 carats and a balanced 15 15 mm face up size, this gemstone delivers