For a contemporary yet natural look, try the porcelain jasper 12mm coin beads from Dakota Stones. These beads feature a circular coin-like shape which displays the color perfectly. Each bead features a cool pattern of purple, burgundy, black and cream colors. Porcelain jasper is a brecciated jasper found high in the Sierra Madre Mountains of Sonora, Mexico. It was found years ago on a gold claim. Metaphysically, porcelain jasper is said to be calming. These beads are available in 8-inch strands.