"\"Blue Opal Necklace | Opal Gemstone Pendant | Minimal and Elegant Gold Necklace for Daily Use | Anniversary Valentine Gift | Gift for Her\" In the Middle Ages, opal was considered a stone that could provide great luck because it was believed to possess all the virtues of each gemstone whose color was represented in the color spectrum of the opal. It was also said to grant invisibility if wrapped in a fresh bay leaf and held in the hand. This minimal necklace is a perfect minimal gift for your