A beautiful natural Blue Topaz weighing 15.60 carats, featuring an elegant cushion shape with a Brilliant / Modified Step cut. The gemstone is transparent and displays an attractive blue colour with good brilliance and light reflection. The gemstone is accompanied by an ICA GemLab certificate, documenting its gemological characteristics. Specifications: * Gemstone: Natural Topaz * Variety: Blue Topaz * Weight: 15.60 ct * Shape: Cushion * Cut: Brilliant / Modified Step * Colour: Blue * Transparency: Transparent * Dimensions: 13.79 × 13.27 × 10.28 mm * Certificate: ICA GemLab * Report No.: TH26G114748 * Report date: 25 February 2026 Laboratory note: Topaz is commonly heated or irradiated to improve or change the colour. The colour authenticity is currently undeterminable. The photographs show the gemstone from different angles and are part of the description. Colours may vary slightly depending on lighting and screen settings.