Rainbow amazonite, sometimes called black amazonite, offers a wider color range than our other semiprecious amazonite beads, displaying not just shades of pale sea-mist blue-green, but also gray, black, brown, yellow, and rust. Some of these semiprecious gemstone beads and donuts contain visible bits of sparkly pyrite, providing even more visual interest. Amazonite is believed to improve one's skin health, marriage, clarity of thought, and social interaction. Rainbow amazonite is also credited with alleviating muscle spasms, stress, and exhaustion. If you wash your amazonite beads, be sure to use lukewarm soapy water and do not use steamers, abrasives, or chemicals.