These earrings feature 10mm firefly glass. Color: Pink Orange MIX These cute earrings have firefly glass hanging from chains, swaying gently. *These firefly glass beads are glow-in-the-dark, so they will glow in the dark for a while after being exposed to strong light. *About Firefly Glass: A very popular souvenir item in Okinawa, firefly glass evokes the deep blue of the Okinawan sea. Similar to "tonbo-dama" (glass beads), firefly glass is a glass bead with a hole, made using a shaping technique called burner work. Artisans melt colored glass onto an iron core, and then layer silver foil onto the molten glass, creating beautiful colors using a special technique. There are no clear records of when firefly glass, a type of tonbo-dama not originating in Okinawa, became a popular souvenir. However, it gained attention in the late 1980s as a replacement for rare coral products, and it is said that its deep sea-like colors captured the hearts of tourists. ・The attachment part is a gold-colored brass earring hook. *You can also have silver-colored findings (including a silver-colored brass chain) at no extra charge. If you wish to have silver-colored findings, please let me know in the comments section, and I will ship them with silver-colored findings. *Attachment parts can be changed for a fee: ・Titanium hook: +10 yen ・Piercing post: +40 yen (can be changed to silver) ・Resin hook: +15 yen ・Resin post: +145 yen (can be changed to silver) ・Non-hole earrings: +205 yen (can be changed to silver) ・Earrings: +85 yen (can be changed to silver) If you change the metal fittings to silver, the chain will also be made in silver. If you wish to change the metal fittings, please let me know in the comments section. I will create a dedicated page for you to purchase from. ・These are handmade, so they are not perfect. Please purchase only if you understand this. ・The price and sale are for a set of 2, so we cannot sell single earrings. ・If you purchase other items I am selling together, I can discount the shipping cost for the duplicated portion, but I do not offer discounts on single items. ・I do not smoke, and I do not have any pets.