Peace of Blue Peruvian Opal Necklace. Gold plated chain 19” long. This lovely Peruvian Opal Necklace is a must-have this Season! It's the perfect Accessory for any outfit! Buy yours today! The Peruvian blue opal has soft relaxing energies. Legend says that it takes the tension out of communication and helps ideas flow freely. It softens the impact of stress from the outside world and can help one to release the trauma of old wounds. It facilitates facing the future with a tranquil healing nature.