The family that includes Cats Eye are banded quartz, which have a beautiful chatoyancy that arises from fibrous inclusions of amphibole fibres or crocidolite (asbestos), which makes them appear banded. The basic colour of banded quartz is blue / black Hawks Eye (see own entry) which contains fibres of blue / black asbestos (crocidolite). When this mass oxidises, the crocidolite turns to limonite and forms the yellow / brown fibres known as Tiger Eye (see own entry). Two other common forms of banded quartz arise from the same base material: Bulls Eye, which is deep red /brown and contains iron in the asbestos mix; and this stone, Cats Eye, which is a paler grey/green and has a lower concentration of crocidolite.
Cats Eye grounds the Silver Ray, which is highly energetic, and helps make it more accessible to us. For us it carries the energies of the Egyptian God Anubis, Guardian of the Underworld and Guardian against Lower Astral Forces. Anubis knows all of existence and after-existence and can advise and guide us to the truths that we seek. Thus working with Cats Eye permits access to the void, and using it we may seek answers or clarification about life-path, karmic or other difficulties encountered that may be hindering our spiritual progress. If we call upon Anubis as we do so, we gain his protection and support: you may feel as if you are suspended or existing in a void whilst you explore what you have asked to know, but you do feel safe and supported throughout.