Dimensional, sculptural Art Stone button from Susan Clarke Designs. This button is just 1/2" in diameter and roughly 3/8" thick including the shank. It's rustic with a bit of variance, in black and white/light gray, with some sheen.  Hand made in California by Susan Clarke. They are irresistible, chunky and light.

Art Stone is similar to porcelain, and requires similar care. No dryer heat. Turn clothes inside out and use delicate wash, or remove the button.