13.34 carats Natural Blue Tourmaline Gemstone | Emerald CutThis natural blue tourmaline weighs an impressive 13. 34 carats and displays a deep blue to blue green tone with excellent saturation and visual strength. The color appears clean, rich, and consistent, maintaining its intensity across different lighting conditions. Cut in an emerald shape, the gemstone features long, elegant step facets and a refined rectangular outline. The cut emphasizes clarity and color depth, allowing light to move smoothly