Approximately 15mm puffed coin paintbrush jasper gemstone beads. There are 24-28 beads per 16" strand. Paintbrush Jasper ~Descriptive. These beads have been enhanced to bring out their natural beauty. Paintbrush jasper is also known as artistic jasper, landscape stone, and crazy horse stone. Questions? Call our friendly sales staff at 1-800-366-2156, or email us.