The Tournure earrings are made in 10-karat solid gold, and are set with a cabochon-cut Pink Opal gemstone. The earrings belong to the iconic Gem Candy collection, inspirered by sweet candy. Opal is the birthstone for October and gets its name from the word, “Opalus” which means “seeing a colour change”. The Opal symbolises creativity, freedom, love, and self-expression and is said to help you get rid of negative emotions. Material: Gold Karat: 10K Stone: Pink Opal Number of Stones: 1 Stone Setting: 4 Prong Dimensions: Stone: 7 x 6 mm Sold as: Pair Does it come with certificate?Yes Can the piece be engraved? No