|The Blue Heart Diamond was found at the Premier Mine, South Africa in 1908. The 30.62 carat heart-shaped, brilliant cut blue diamond was faceted in 1910 from a 100.5 carat rough.|
Mrs. Marjorie Merriweather Post was the last private owner of the diamond. She purchased the stone for $300,000 from Harry Winston in 1953. She gifted the Blue Heart Diamond to the National Gem Collection in 1964.