Black Sea Onyx is a variety of onyx gemstone that is found in the regions surrounding the Black Sea, particularly in Turkey. It is a type of chalcedony, a mineral made up of microscopic crystals of quartz. The stone is known for its striking black color, which is interspersed with bands of white or gray.
In addition to its aesthetic appeal, Black Sea Onyx is also believed to have spiritual and healing properties. It is thought to promote strength, grounding, and protection.
Like other types of onyx, Black Sea Onyx is relatively hard and durable, with a Mohs hardness rating of around 7, which makes it resistant to scratching and other forms of damage.