China Stone is the diversified technology company and world-leading provider of precision cut natural gemstones in a strictly uniformed and digitally calibrated array of colors, proportions and sizes. We deliver a wide range of natural gemstones to fine jewelers, watchmakers and luxury trade professionals throughout the world. China Stone Ltd has combined automated cutting technology with advance inventory-grading, stock-management, order-processing systems and high quality customer service. Our line of precision-calibrated gemstones, are machine cut. Every gemstone, is crafted to the most precise specifications for shape, size, color and quality.