The ancients associated Emerald with the Greek goddess Venus, the goddess of love and beauty, it and was said to protect lovers from unfaithfulness. If the heart was loyal, the gem would glow in a beautiful green color, but if the heart was went astray, it would turn a different, lifeless color. In addition, it was believed that wearing an Emerald would improve one’s memory and intelligence, enabling one to think clearly about the past, present, and future.