Archduke Joseph gem to fetch at least $15m Christies

The video discusses a remarkable diamond known for its exceptional qualities and historical significance. Originating from the renowned Golconde mines in India, it was once owned by Archduke Joseph of Austria. The diamond was passed down to his son and stored in a Hungarian bank in 1933. During WWII, it was sold to an anonymous buyer and kept in a vault. Its historical provenance and outstanding qualities make it one of the most prestigious diamonds ever sold publicly.

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