Strengthen and Protect Black Onyx Opal Inlay Dragonfly 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 7/8" long with hook, 7/8mm wide with a 3 x 5mm Opal man made. The french earwires and whole body of dragonfly are sterling silver. Silver is considered the Moon or Yin energy. The Dragonflys existence is around the water. Thus it is considered a Water Sign. Dragonfly is a spiritual messenger speeding your messages to your ancestors in the Universe. The Dragonfly moves quickly doing acrobatics in the air. It thus shows our mind how to quickly accomplish goals. 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.