Strengthen and Protect Black Onyx Opal Inlay Small Bear Sterling Silver Dangle Earrings Black Onyx has been used for centuries by many cultures for protection. In the Southwest, it is not only a protector stone but aids our endurance for all of life. It is used to help the overall well being of the wearer. Dimensions: 1 The french earwires and whole body of bear are sterling silver. Silver is considered the Moon or Yin energy. Bear is a very traditional protector animal. It is also a symbol of strength. Opal is considered a purification stone. The Green Fire is the Heart Chakra color. This Opal is Man Grown and therefore stronger than the real stone.