Uncertain if it's Tachikichi. "No-brand glass plates" set of 5 Diameter: Approximately 13cm Tachikichi Neodymium glass seems to change color depending on the light source used (natural light, fluorescent light, etc.) The design is very similar, but details are unknown. I tried testing it, but couldn't see any color change. Photos 1-5 were taken directly under the lighting. Photo 6 shows natural light with a window and fence reflected. It just looks bright, but it still appears purple. It might be that the plates are originally purple. For those who can accept the item as is. Will be delivered via Mercari delivery. I'm also selling various other tableware, including Tachikichi.