The ancient Persians believed the Earth rested on a huge blue Sapphire which gave the sky its color. Sapphires have been collected by royalty, the famous, and the prosperous for thousands of years. Princess Diana was given an oval sapphire in her engagement ring, and this royal blue sapphire is now worn by Catherine, Princess of Wales. This large, natural blue sapphire is cushion, in a modified brilliant/step cut, and is very eye clean. Its deep blue color is described as vivid blue, or royal blue. It comes from Sri Lanka, and has been heat-treated to bring out its rich, clear blue color. As a loose stone, it is ready to be set into the jewelry of your choice; perhaps an engagement ring for the princess in your life.