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The Blue Heart diamond is 30.82 carats. The gem was cut into its distinctive shape in 1909-1910 and was bought by Cartier shortly thereafter. Since then it has bounced around from a wealthy Argentinian woman, Van Cleef and Arpels, a European family, Harry Winston, Marjorie Merriweather Post, and, finally, the Smithsonian, where The Blue Heart has resided since 1964.

The Blue Heart diamond is 30.82 carats. The gem was cut into its distinctive shape in 1909-1910 and was bought by Cartier shortly thereafter. Since then it has bounced around from a wealthy Argentinian woman, Van Cleef and Arpels, a European family, Harry Winston, Marjorie Merriweather Post, and, finally, the Smithsonian, where The Blue Heart has resided since 1964.

The Logan Sapphire The flawless sapphire is the second largest known one in the world, at a staggering 422.99 carats. The cushion-cut stone is one of the world's largest and most famous sapphires. It is set in a brooch surrounded by 20 round-cut diamonds weighing 16 carats.

The Taylor-Burton diamond necklace 69.42 carats pear-shaped Its current owner is Robert Mouawad, who had the diamond recut to 68.0 carats

from Vogue English

Celebrated Stones

Harry Winston’s three star diamonds: From top to bottom, the Hope Diamond at 45.52 carats, the Star of the East at 94.80 carats and the McLean diamond, here shown set into a ring. Boasting names that evoke passion, myth and desire, not only have each of these jewels become part of Harry Winston’s famed jewelry collection, they have also all at one time been owned by US mining heiress Evalyn McLean.