High-quality natural Sky Blue Topaz square-shaped concave-cut gemstones calibrated to 8x8 mm (approx. 2.70 to 2.90 cts per stone). Sourced from top-grade natural topaz rough originating from Brazil, Africa, and India and treated via standard, stable irradiation to achieve a vibrant sky blue color, these gems are precision-cut in our own factory by skilled artisans. They feature specialized 3D concave faceting for intense light diffusion, extraordinary internal brilliance, clean clarity, and fine surface polishing. Ideal for solitaire rings, pendant centers, drop earrings, and custom fine fashion jewelry designs. Wholesale bulk quantities and custom orders available upon request.