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a black or dark-colored variety of chalcedony, a type of cryptocrystalline quartz, often used as a gemstone or for decorative purposes
What is "onyx"?
Onyx is a banded variety of chalcedony, a mineral belonging to the quartz family. It is a cryptocrystalline form of silica and comes in a range of colors, including black, white, gray, and brown. The black onyx is the most popular variety and is used in jewelry making. Onyx is known for its smooth texture and its ability to hold intricate carvings. It has been used for centuries in decorative arts, as well as for spiritual and healing purposes. Onyx is believed to help release negative energy and enhance mental and emotional well-being. It is a popular gemstone for men's jewelry due to its sleek, sophisticated appearance.
a chalcedony with alternating black and white bands; used in making cameos
having a deep black color with a glossy and smooth texture, often associated with the gemstone of the same name
