2.7cm x 1.8cm Thickness: Approximately 4mm This is a moon necklace. A chain of approximately 45cm is included, but please let me know if you would like it shorter. I will cut it. * Not compatible with metal allergies. A whale's tooth was carved. There are color irregularities. I want to deliver it to someone who will use it for a long time. Also, there are many other items such as without a chain and earrings. #Izumifune'sMoon #Moon #CrescentMoon