♥ Strength ♥ Stamina ♥ Constancy ♥ Permanence ♥ Firmness ♥ Durability ♥ Self-control Onyx is a variety of Chalcedony. Onyx is a 7th Anniversary gemstone. Zodiac - Gemini, Leo Element - Earth Typical colours - Black, grey, white, blue, brown, yellow, red, green Onyx gives strength. It promotes vigor, steadfastness and stamina. Imparts self-confidence, helping you to be at ease in your surroundings. Onyx banishes grief, enhances self-control and stimulates the power of wise decision-making. It encourages happiness and good fortune. Onyx treats disorders of the bones, bone marrow and blood. It is beneficial for teeth and the feet.