Onyx belongs to chalcedony and occupies Capricorn and Leo zodiacs. With a numerical vibration number of 6, it has variable tinges in its different crystalline forms. Shades of purple, white and blue are also present yet the most common hues are black or white. These mineral crystals often form bands in their configuration with agate having curved bands while onyx has parallel band arrangement. With a molar mass of 60g/mol and SiO2 as chemical design, it has a Mohs hardness scale of 6.5-7. The trigonal-hexagonal crystal pattern lacks any cleavage planes and possesses conchoidal fracture tendencies. This vitreous and silky crystal has white streaks running through its substance. With translucent diaphaneity, it has a specific gravity of 2.55-2.7. The crystal has uni-axial properties with a refractive index of 1.530-1.543.
The mineral oxide stone gives a natural glow with potential effect as a defier of negativity from the bearer’s emotions. The black variety of the onyx has a reflecting sheen and some onyx crystals have tinges that vary from violet, pink to brown having different bands of diverse hues, the stone has many positive influences on the wearer. It promotes relaxation, gives the courage to face different life challenges and cures physical exhaustion and brings vitality.
Black onyx has widespread occurrence in Mexico, South Africa, Brazil, India, Madagascar, and USA. Assyrian word meaning ring gives origin to the term ‘onyx’. This denotes use of onyx in ring carvings. Onyx is believed to wax athletic tendencies particularly when placed close to Solar Plexus. It boosts endurance, explosivity, perseverance, and strength. Onyx holds the great relief to expel bad or unwanted memories from bearer’s brain. Therefore, it is meant for the healing of emotional wounds from past life.
Onyx derives its name from Greek word, ‘Nux’, meaning fingernail, which was cut by cupid. This explains black onyx high popularity among Roman and Greek empires. When used with another stone, Black Onyx heightens meditative and dreaming abilities. Hence, it helps the bearer to carve the future he dreams of with greater mental power.
Medically, it cures addiction of alcohol, allergic reactions, blood disorders, epilepsy, glaucoma, treats skin diseases, eases childbirth, wanes obesity, treats ovarian disorders and strengthens the legs.
The stone is believed to provide strong protection against adversaries, black magic while it grounds the bearer’s psychic attacks. It has the potential to transform negative energies and stimulates concentration and intuition. Furthermore, it helps in decision making and brings an end to unhappy relationships.