Wearing an aquamarine is said to help couples smooth out their differences and reawaken their love for each other making an aquamarine pendant the perfect anniversary present. 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.