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. The gem in a citrine pendant is considered a harmonious, optimistic, and cheerful stone with the ability to brighten up our hearts darkest places Emerald is associated with Venus, the Greek goddess of love and beauty. They say an emerald pendant can protect lovers from unfaithfulness.