Onyx - Natural minerals and crystals

Onyx is a mineral formed from silica, which forms in marls and sediments. It is a mineral composed of quartz, calcite and cristobalite, which forms in fossil diatoms. It has a translucent appearance, which varies between white, gray and black. It is known for its veins, which can vary between deep and sparkling colors. Onyx is generally used for various applications. It is often used for making jewelry, handicrafts and decorations. It can also be cut into cabochons, which are used in watchmaking, jewelry and goldsmithing. It is also used for decorative objects, such as sculptures and glassware. It is also used for the production of construction materials such as shaft wings, stairs, wall cladding and load-bearing walls. It is also used in the manufacture of chemicals, such as pesticides and protective coatings. Onyx can be found in many parts of the world, mainly in the eastern parts of India, Africa and North America. It is also available in the United States, Canada, South Africa and Australia.