Blue Chalcedony 8 MM Round Bead Necklace 18 Inches with Clasp 18 inches long 8 mm round beads Basket weave tongue and safety clasp Considered a sacred stone by Native Americans, Chalcedony nurtures and promotes good will and brotherhood. It alleviates hostility, irritability and melancholy. Chalcedony absorbs and dissipates negative energy. It harmonizes mind, body and spirit, assists telepathy and increases physical energy.