Inner circumference: 18cm, beads 20mm ★Lightning-struck wood refers to wood split by natural lightning, typically jujube wood, hard willow, or other weather-resistant woods. These trees are struck by lightning during their normal growth, becoming lightning-struck wood. ★The common belief among the people is that lightning striking a tree is the work of the heavens, splitting it with thunder, and that ghosts deeply fear it, making it a powerful talisman to ward off evil. Lightning-struck wood is considered the supreme sacred wood in Taoist magic and was used to create spiritual artifacts. 【Special Notes】 ★Photos taken with an iPhone by an amateur are posted as is. The color may appear slightly different from the actual item depending on your display. Please understand this beforehand. ★All of our products have not been appraised by an appraisal institution before being listed, and we do not guarantee the authenticity of items not marked as genuine. Please carefully examine the images to make your own value judgment before bidding. ★Individual preferences vary regarding scent and perceived beauty. Please refrain from purchasing if you are extremely concerned or have any doubts. ★Due to the nature of natural stones (wood), there may be variations in color, shape, and size, as well as inclusions, cracks, and small scratches. Please understand and acknowledge this. ★Returns and exchanges are not accepted after purchase. Please understand. For a pleasant transaction, please feel free to ask any questions you may have before purchasing.