It is the birthstone for the Leo Zodiac sign. Onyx is a variety of silicate mineral chalcedony. It is in the group of quartz. It chemical composition is silicon dioxide with carbon and iron with a hardness of 6.6 to 7. It is found in Canada, Mexico, Russia, India and Brazil.
Black onyx is sought after for its metaphysical properties. Its name originated from the Greek word onux which means fingernail or claw. It has been used throughout history in ornaments, jewelry and carvings especially in cameos by the ancient Greeks and Romans.S on this item only. This item is in the category "Jewelry & Watches\Handcrafted & Artisan Jewelry\Necklaces & Pendants". The seller is "gemdesigns4u" and is located in this country: US. This item can be shipped worldwide.