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 black to almost every color. Commonly, specimens of onyx contain bands of black and/or white. Onyx, as a descriptive term, has also been applied to parallel banded varieties of alabaster, marble, calcite, obsidian, and opal, and misleadingly to materials with contorted banding, such as “Cave Onyx” and “Mexican Onyx”.

Onyx is like a source of strength. It offers help when things are tough or unclear, especially in times of big stress. It helps you see ahead and gives you the power to control your future. This gem boosts your energy, determination, and endurance. It helps you learn and grow, making you feel more sure of yourself and comfortable in your environment. Onyx is also known to hold onto the memories of the person who wears it.

Photo by adobe.com – Black Onyx