The Drop pendant is made in 10-karat solid gold and is set with a cabochon-cut drop of Pink Opal gemstone. The pendant can be placed on a necklace or bracelet. The Drop pendants are part of the Gem Candy collection, featuring unique combinations of gemstones cut like sweet bon-bons in 10-karat gold. 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 Dimensions: Does it come with certificate?Yes Can the piece be engraved? No