Psychedelic patterns mix with warm colors in the bird's eye rhyolite 10x20mm double drilled rectangle beads from Dakota Stones. Available in 8-inch strands, these rectangular beads with smooth, rounded corners feature bands of yellow, red and brown color swirling together to create groovy patterns. The two drilled stringing holes make these beads perfect for use in watch bands. Rhyolite was named "streaming rock" because of its beautiful bands, bubbles and crystal-rich layers that form as lava flows onto the surface of the stone. Rhyolite can look very different, depending on how it erupts. Rhyolite has a composition similar to granite but has a smaller grain size. Mined in Mexico, rhyolite is said to help communication of all kinds. Dakota Stones offers high-quality gemstones that are all useable in jewelry designs because every bead is checked to ensure they are cut and drilled correctly, that the finish is right and that the beads look distinct to their stone type.