Sulemani Hakik Ring Original Natural Black Haqiq Precious Gemstone Hakeek Astrological Silver Plated Adjustable Ring Hakik Stone Natural Shining Certified Black Onyx Gemstone Onyx is the birthstone for Leos Onyx is a variety of the microcrystalline quartz, called chalcedony. The name "chalcedony" comes from Calcedon or Calchedon, an ancient port on the Sea of Marmara in Asia Minor. Black Onyx meaning is Self-control, decision making, intuition, protectio