The origin of Green Onyx follows back to different regions all over the world. It is principally found in nations bountiful in natural deposits of chalcedony. A portion of the notable sources of Green Onyx includes Brazil, India, Uruguay, and the US. The gemstone's formation is an intriguing geological process that includes the slow crystallization of silica-rich solutions inside holes of magma. After some time, the cooling and hardening of these solutions bring about the one-of-a-kind patterns and bands that distinguish Green Onyx from other gemstones.