Beads range from about 6x5mm to 13x9mm. These exquisite, high-quality natural crystal beads feature a rich and vibrant color palette unmatched in it's eye-catching splendor. This unique gemstone dazzles with its characteristic violet-blue hue found only in the hills of Tanzania's Manyara region. Ambitious Jewelry designers have found a fantastic option with this trichroic gemstone, capable of subtle color shifts when viewed from differing angles. Whether your Jewelry Making endeavors call for necklaces, earrings or anything else, these organically shaped natural crystals are the answer!