The History of Sapphire Engagement Rings Sapphire engagement rings have a long and rich history. In ancient times, sapphires were believed to have healing powers and bring protection to their wearers. They were also thought to symbolize truth, sincerity, and faithfulness. In fact, sapphires were often worn by kings and queens to protect them from envy and harm. During the Middle Ages, sapphire engagement rings were popular among the clergy and nobility. They were considered a symbol of the heavens and the divine. It wasn't until the 18th century that diamonds became the popular choice for engagement rings, but sapphires continued to be used for their symbolic meanings.