9ct Gold Opal Teardrop EarringsOpal Teardrop Earrings These teardrop shaped earrings are crafted from 9ct gold and are set with carefully selected opal stones. The 9ct gold, which is composed of 37. 5% pure gold, provides a durable and warm setting that complements the natural play of colour within each opal. As each pair is individually made to order, please allow a delivery time of 6 to 8 weeks for the creation and dispatch of your earrings.