Opal symbolizes confidence, clarity, and calmness and is said to promote faith in oneself and hope for the future. Wear an opal pendant to capture these qualities. 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. Emerald is associated with Venus, the Greek goddess of love and beauty. They say an emerald pendant can protect lovers from unfaithfulness.