Composed of approximately 300 carats of old mine-cut diamonds, the historic piece was once worn during royal coronations and is rumoured to hold ties to the scandal that tainted Marie Antoinette’s reputation.
A rare 18th century 300-carat diamond with links to Marie Antoinette is going up for auction
The historic piece, which was owned by the highest ranking of aristocracy and worn during at least two royal coronations, is part..
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