Onyx primarily refers to the parallel banded variety of the silicate 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. Commonly, specimens of onyx contain bands of black and/or white
Onyx provides strength and support especially in difficult and stressful situations. Helps to be the master of your own destiny and promotes vigor, stamina and determination.
Onyx holds onto memories so they can be used to delve into past lives. It's a comforting crystal for those dealing with grief, can be used to strengthen self control and for stimulating the power of good decision making. Onyx boosts self confidence, helps with phobias and balances yin and yang energies.
Onyx is a stone for the present but one that carries with it happy and positive memories from the past.