Jewellery is inlaid with blocked out crystal opal and the back on the setting is coloured black so when opal is set the jewellery piece is enhanced and the opal is brighter, inlay is popular in gold and silver as well as in ironstone pendants,soild natural crystal opal from lightning ridge set in natural potch,the potch has hole hand drilled to fit opal and back has been blackened to enhance the colour
