IINKSTONE,along with ink,writing brush and rice paper,are known as the Four Treasures of Study in China. For calligraphers and painters,a good inkstone is as important as the inkstick itself.An inkstone is a slate to grind the solid inkstick in water,and as such may For calligraphers and painters, a good inkstone is as important as the inkstick itself. An inkstone is a slate to grind the solid inkstick in water, and as such may