A long list of famous personalities, including Elizabeth Hurley, Mary-Kate Olsen, Penelope Cruz, and Kate Middleton, have been seen flaunting sapphire jewelry, which has, in turn, contributed in skyrocketing its popularity. Today, you can see an increased demand for jewelry like the black sapphire diamond ring. Below are a few sapphire jewelries used by the celebrities.     Royal Blue The still-ruling Queen Elizabeth celebrated her 65th birthday the previous year. On this special occasion, she wore an attractive necklace and earrings to beautify her Sapphire Jubilee. She gifted Princess Diana a sapphire brooch. Later, she re-set it with seven strands of pearls into a set of a stunning necklace. Aside from this, Dame Helen Mirren was also spotted with a very similar set in the Oscars. Perhaps this was a gesture of respect to the Queen. Sri Lankan Stunners Sri Lanka sapphires are well known around the world as one of the best. They are adored for their clarity, carat weights, as well as color. In fact, all of the three largest sapphires in the world were excavated from the mines of Sri Lanka – the country is home to the Rockefeller Sapphire weighing 422.99 carats and the Blue Giant of the Orient weighing 486.52 carats.