These The Duke coasters are handpainted on 4"x 4" Ceramic Wall Tiles. The tiles were first acid etched to give them tooth to be painted. Then I painted them with white acrylic paint and did a negative painting in black acrylic. I then made a holder for them out of 1/4" Birch Ply and painted it black on the outside with a red interior. The coasters are sealed with a UV Protective, Non-Yellowing Polycrylic and each have cork tabs on the bottom so as not to scratch the furniture. These coasters are not dishwasher safe, but they do hold up well. I use them in my own home.
Thank you for taking the time to look!