MATERIAL: Made of natural granite. Each product is examined to ensure the quality before selling, natural patterns and colors do not affect the usage SIZE: 7.08 inches in diameter, 3.03 inches in height (Capacity: 32oz) RETAINS HEAT: Natural granite retains heat well, safe to use on open flames, cook food in a quicker and more effective way, keep the food warm and help further slow cooks CREATES AN EARTHY SMORKY FLAVOR While reheating the rice, coating a layer of sesame oil on the bowl helps to form a nice crisp crust and inherit an earthy smoky flavor CLEAN AND CARE: The package comes with detailed instructions for how to use stone bowls.