This is a masterpiece of Wenwan walnuts, "Nanjiong Stone," a rare and exceptional piece characterized by its extremely thick ridges (vertical lines). It is a beautiful, unadulterated item. The size is 42mm on the sides, 40mm at the belly, and 34mm in height, offering a good balance, perfect for appreciation and enjoyment. Opportunities to see Nanjiong Stone with such thick ridges are rare, making this a valuable item for any collection. Please check the images for detailed information about the product and make your purchase based on your own judgment. *Due to the nature of the product, returns and exchanges are not accepted. Thank you for your understanding.*