Hello! Thank you for visiting my shop from among many others. Firefly Glass ☆ Dark Blue ☆ 12mm Luminous type that glows in the dark Hawaiian charm ☆ When you shine the firefly glass in the sunlight, it sparkles and shines very beautifully ☆ Each one is carefully made, but because it is handmade, there may be some slight distortions. We ask for your purchase if you understand. Hooks and other parts are Hypoallergenic Surgical stainless steel is used. It will not turn black and will remain in a beautiful condition ☆ Earrings can be changed for an additional 100 yen. Surgical stainless steel ☆