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OPTICAL DESIGN: High-quality crystal glass prism with precise triangular shape, measuring 5 centimetres in length for optimal light refraction EDUCATIONAL VALUE: Perfect teaching aid for demonstrating light spectrum, physics principles, and rainbow creation through refraction VERSATILE USE: Ideal for photography experiments, classroom demonstrations, and hands-on science learning activities COMPACT SIZE: 5-centimetre length makes it portable and easy to handle whilst maintaining excellent optical properties VISUAL EFFECTS: Creates stunning rainbow patterns when placed in sunlight, perfect for both educational and decorative purposes