where is onyx found
Onyx is a gemstone found in various regions of the world including Argentina, Australia, Brazil, Canada, China, Czech Republic, Germany, India, Madagascar, Latin America, the UK, and various states in the US.gate and onyx are both varieties of layered chalcedony that differ only in the form of the bands: agate has curved bands and onyx has parallel bands. The colors of its bands range from white to almost every color (save some shades, such as purple or blue).