High-quality natural Smoky Quartz round buff top cut gemstones calibrated to 12 mm (approx. 5.00 to 6.00 cts per stone). Sourced directly from Brazilian mines and expertly cut and polished in our own factory by skilled artisans, these gems feature a smooth domed top with faceted pavilion undersides, producing exceptional depth, brilliance, and surface luster. Ideal for statement rings, pendant centers, cuff links, and custom fine jewelry designs. Wholesale bulk quantities and custom orders available upon request.