Add dusky color to your designs with the smoky quartz 6mm round beads from Dakota Stones. Available by the strand, these gemstone beads are perfectly round and feature a versatile size. They will work nicely in bracelets, necklaces and even earrings. Smoky quartz is named after its smoky color, which is caused by gamma rays. The color of smoky quartz ranges from brown to black and sometimes smoky gray. Mined in Brazil, the stone is believed to enhance organizational skills and so is good to have around the workplace or home office.