Improves concentration and devotion.
Works with your skeletal and epidermal systems (bones, teeth, nails, hair).
Helps calm worries, fears and sexual tensions.
Aids in communication and ending marital disputes.
Onyx is a banded variety of the oxide mineral chalcedony. Agate and onyx are both varieties of layered chalcedony that differ only in the form of the bands: agate has curved bands and onyx has parallel bands. The colors of its bands range from white to almost every color (save some shades, such as purple or blue). Commonly, specimens of onyx contain bands of black and/or white.