Ball bracelet 6mm from Red Tiger's Eye (Cat's Eye) from South Africa.

Tiger's Eye is a quartz variety. The color of the stone is yellow-brown to brown, streaky and opaque. Locations include Africa, India, Mexico, California and Australia. Tiger's eye is caused by the silicification of black-blue asbestos fibers called crocidolite. This creates solid inclusions of hair-like crystals in the quartz. The oxidation of the original crocidolite fibers creates the gold-shining limonite fibers of the stone. Tiger's eye is so called because the stone has a light reflection that is reminiscent of the eye of a tiger. This slit-shaped light effect is called chatoyeren or 'cat's eye effect'. When the stone is cut cabochon (convex), the beautiful cat's eye effect is most visible. The color of the stone gives it its name: the red type is called Cat's Eye, the blue Falcon's Eye and the yellow Tiger's Eye (golden yellow, golden brown).