The Stuart Sapphire

Among the numerous glittering gemstones affixed to Britain’s Imperial State Crown, one of the largest is a vivid blue gemstone with a fascinating, muddled history: the Stuart Sapphire. The sapphire, which weighs in at approximately 104 carats, is currently set at the back of the Imperial State Crown. In their classic book on the British […]

The Bismarck Sapphire

The Bismarck Sapphire Necklace is one of the most famous gemstone jewelry pieces of our time. Countess Mona von Bismarck (1897-1983) was its former owner before she generously donated the priceless necklace to the Smithsonian Institution’s National Museum of Natural History in 1967. In honor of her invaluable donation, the Smithsonian Institute named the stunning sapphire and platinum necklace […]