Thank you for viewing! (^-^) ~Ryukyu Hotaru Glass~ This Ryukyu Hotaru Glass is carefully crafted by artisans, with silver foil embedded within. It's a glow-in-the-dark type, absorbing light during the day and glowing in the dark☆ Bead size: Approximately 7mm Chain: Silver nickel-free processing 36 + 5cm ~Hardware Changes Accepted~ Stainless steel chain: +300 yen Discounts available for multiple purchases☆ This is a handmade item. I make every effort to create it carefully, but it does not compare to mass-produced items. I hope you will handle it gently. As it uses natural stones, there may be cracks or inclusions. I have several cats. Please refrain from purchasing if you are concerned. ・I am studying to polish natural minerals such as Larimar. My polishing skills are still developing, but thank you for your understanding (*´ー｀*) Please read my profile for more information☆彡