Iridescent Garnet Clear Swirl Czech Glass Button, 1-1/16" #CZ 274
What a beauty. The deep red glass is clear, and the finish is AB or Aurora Borealis, a glass treatment inspired by Northern Lights. It's a coating on the back that helps create the iridescence. This button is just over 1" in diameter, about 1/4" thick including the shank. A timeless, wonderful button.