Go stones 15 white stones - 300 yen If you would like 15 white stones, please purchase as is. Additional stones are available (+10 yen per stone, limited quantity). If you would like to add stones, please comment before purchasing. Material: Probably plastic. I apologize if this is incorrect. Size (cm): Diameter 2.12, thickness 0.63 This is the average measurement of 10 stones selected at random. Please forgive any errors due to amateur measurement. Please note that the color of the product may differ slightly from the photos depending on your smartphone or other device. This is a used item. There are minor scratches, light stains, and slight signs of use, but there is no significant damage. Therefore, the condition of the product is rated as "no noticeable scratches or stains." I have checked carefully, but please forgive any oversights or omissions in the photos due to amateur inspection. Please consider purchasing only if you understand and agree with the product description.