This is glow-in-the-dark type Hotaru glass that stores light in a bright place and glows in a dark place. "100 yen off from the second item" Hotaru glass is made by craftsmen who determine the size of each piece by feel. Please understand that there may be size variations, dents, and cloudiness depending on the daily climate before purchasing. Hotaru glass is a glass bead with a hole, made using a molding technique called burner work, similar to tonbo-dama (glass beads). Craftsmen melt colored glass one by one and round it on an iron core. They then layer silver foil on the molten glass, which is like syrup, and express beautiful colors using a special technique. Hotaru glass Okinawa tonbo-dama tonbo glass Ryukyu glass fluorite hotaru stone hotaru glass bracelet Kabira Blue --------------------------------------------------- #Okinawa #RyukyuGlass #HotaruGlass #TonboDama #HotaruGlass #Fluorite #MarinePurple #HotaruGlass