Sapphires are known for their deep blue color, such as the color of the sapphire that famously sits at the center of Kate Middleton's engagement ring. However, sapphires can actually come in any color but red. Readers discover this and other amazing facts about sapphires as they explore engaging text and eye-catching fact boxes. They also examine vibrant photographs chosen to highlight the beauty of this popular gem. What is a star sapphire? The answer is waiting for readers to find in this captivating volume.