“Less vivid than its sister gem, the ruby, i t typifies calm and tried affection, not ardent passion,” he continues. “The sapphire - the gem of autumn, the blue of the autumn sky - is a symbol of truth, sincerity, and constancy,” writes Kunz in his book The Curious Lore of Precious Stones. Seems the Cambridges are following in her very stylish footsteps. The untraditional wedding ring ca used an uproar when Diana, an 80s fashion icon, was seen in the bold September birthstone instead of a conventional diamond engagement ring. Prince William popped the question with a stunning blue sapphire ring once worn by his mother Princess Diana. In the 1960s it was nabbed (along with a pricy star ruby) in a jewelry heist f it for a movie.ĭuchess of Cambridge Kate Middleton pro udly sports another famous sapphire with a cinematic story behind it. Clocking in at 563 carats, this unique gem owned by the American Museum of Natural history is one of the most valuable in the world.

The Star of India, wh ich exhibits a radiating effect called asterism, is one of the finest examples of blue star sapphire. Romantic poet Percy Shelley used the stone to describe “sapphire floods of interstellar air” while Kunz calls it “the height of celestial hope.” While sapphires come in a range of natural colors, it’s the bold cobalt blue gem th at earns all the attention.

Sapphire birth month