Onyx is a type of Chalcedony that can be seen as black, white, red, orange, and beige. A powerful protection stone, Black Onyx absorbs and transforms negative energy, and helps to prevent the drain of personal energy. Onyx is a gemstone found in various regions of the world including Yemen, Uruguay, Argentina, Australia, Brazil, Canada, China, Czech Republic, Germany, India, Indonesia, Madagascar, Latin America, the UK, and various states in the US. Onyx is the traditional zodiac stone for those born under the sign of Leo, the middle of summer, from July 23 to August 22.