This is a set of 3 glass plates out of a 7-color set by Kazumi Tsuji + factoryzoomer. These are the 3 plates in the foreground of the photo: yellow, red, and green. This is from the Rainbow Series, which was sold as a set of 7 plates in 7 colors, all with the same shape (jagged edges). The stamp in the third photo is on all of them. Limited edition. Approximately 15cm in diameter. The remaining 4 plates are also for sale. I loved these very much, and I hesitated to list them, but I haven't had a chance to use them and they've been stored away, so I've decided to offer them to someone who will cherish and use them. No claims, no returns.