This is glow-in-the-dark, phosphorescent Hotaru-glass that stores light in bright places and glows in dark places. "100 yen off from the second item" Hotaru-glass is made by artisans who determine the size of each piece by feel. Please understand that there may be variations in size, dents, and cloudiness due to daily weather conditions. Hotaru-glass is a glass bead with a hole, made using a shaping technique called burner work, similar to Tonbo-dama (glass beads). Artisans melt colored glass one by one and shape it around an iron core. They then layer silver foil onto the molten glass, which resembles syrup, and use a special technique to create beautiful colors. Hotaru-glass Okinawa Tonbo-dama Tonbo-glass Ryukyu-glass Fluorite Hotaru-ishi Hotaru-glass Bracelet Kabira Blue --------------------------------------------------- #Okinawa #RyukyuGlass #HotaruGlass #TonboDama #HotaruGlass #Fluorite #MarinePurple #HotaruGlass