17. Queen Elizabeth, The Queen Mother
Queen Elizabeth II's mother, also named Elizabeth though mostly referred to as The Queen Mother, got engaged to George VI in 1923, and at the time he was not heir apparent (meaning first in line to the throne). George proposed with a sapphire ring with diamond accents. Due to the quality of photos from that time, there are no good pictures of the ring. Further, The Queen Mother ended up swapping it out for a different ring in later years, which we'll cover next!