Emerald is associated with Venus, the Greek goddess of love and beauty. They say an emerald pendant can protect lovers from unfaithfulness. An amethyst pendant is said to bring spirituality, tranquility and peace to the wearer. It is even said to help one succeed in business. Blue Topaz is known as the gem that has the power to improve one’s communication skills. A blue topaz pendant may make you a more eloquent and confident speaker.