Chemical Formula: SiO2
Tiger’s eye displays chatoyancy, or a “cat’s eye” affect. For more than 100 years it has been believed to form when parallel veins of crocidolite (blue asbestos) are metamorphically altered to iron oxides (giving it its gold colour), which is then replaced by quartz. In the case of blue tiger’s eye (also know as hawk’s eye or falcon’s eye), the crocidolite is not altered before the quartz replacement, and retains its original blue colour. In 2003, Heaney and Fisher argued that tiger's-eye is not a replacement mineral but "classically exemplifies synchronous mineral growth through a crack-seal vein-filling process." However, mineralogy books tend to stick with the original explanation. Both varieties are very popular in jewellery making and gemstone carving.
Birthstone for Leo and Capricorn
Chakra Alignment depends on colour
Properties: Gold tiger's eye divides opinion - many people love it, while others dislike it, or find it challenging and difficult to wear or work with. I've rarely seen so much superstition attached to a stone with little tradition surrounding it. The vast majority believe it is a good luck stone that will bestow abundance, and it is sometimes carried in a purse or wallet for this purpose. The few who find it challenging associate it instead with bad luck, and won't have it near them. If you decide this is a crystal for you, in addition to the "good luck" aspect, gold tiger's eye is grounding and protective, without the heaviness of some of the root chakra crystals. It is also warming and stimulating, and strongly associated with creativity and the creative arts. It is helpful in clearling "stuck" energy in the solar plexus, placed directly on the chakra in a layout, and brings with it a sunnier, more positive outlook.
Properties: In spite of its colour, blue tiger's eye is usually considered to be aligned with the root chakra, as it is very dark, and incredibly grounding and protective. It is also very calming, with a soft, cocooning sense of safety and nurturing. This makes it helpful in achieving a deep meditative state. When aligned with the Throat Chakra and communication, the quartz comes into its own, helping the user to communicate with clarity, cutting to the chase, and also encourages communication on a higher level. In common with other deep blue minerals, it appears to support and reconfigure brain function, assisting synapses to find new pathways, particularly when there has been damage.