Hello! Thank you for visiting my shop from among many others. Firefly glass, deep blue ☆ 10mm Luminous type that glows in the dark Flower charm ☆ When you shine the firefly glass in the sunlight, it sparkles and shines very beautifully ☆ Each piece is carefully made, but as it is handmade, there may be some slight imperfections. We ask for your understanding before purchasing. Hooks and other parts are made of Surgical stainless steel, which is less likely to cause allergies. It will remain in a beautiful condition without turning black ☆ Earrings can be changed for an additional 100 yen. They are also surgical stainless steel ☆