Legends say that wearing a peridot pendant can bring happiness and contentment. Set in gold and surrounded with diamonds, the power of a peridot is said to intensify. An amethyst pendant is said to bring spirituality, tranquility and peace to the wearer. It is even said to help one succeed in business. Emerald is associated with Venus, the Greek goddess of love and beauty. They say an emerald pendant can protect lovers from unfaithfulness.