The mysterious, deep green color is lovely! ★ Inner diameter size: 16.5 cm. Inner diameter size cannot be adjusted. ★ Bead size: 11.5 mm In addition to the general effects attributed to jade, such as "patience and harmony," "warding off evil and bad luck," and "mental stability," it is believed to possess the powers of "vitality," "fertility," and "protection" stemming from its connection to the ancient Mayan civilization. It can also be expected to enhance insight and intuition, and bring peace of mind and body. (Quote from the internet) This is jade from Guatemala, famous for producing high-quality jade. Among them, the rare and highly valuable Mansano jade is characterized by its overall bluish tint, and its beautiful color is called Guatemalan Blue. Production is low, and prices have been rising year by year. 6980 5980