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Origin[]

The Black Prince's Ruby is a bead-shaped spinel weighing roughly 170 carats (34 g), approximately the size of a chicken egg. It is currently set in the cross pattée above the 317.40 carats (63.480 g) Cullinan II in the front of the Imperial State Crown. The Black Prince's Ruby is one of the oldest of the Crown Jewels of the United Kingdom, with a known history dating back to the middle of the 14th century and having been in the possession of the rulers of England since it was given in 1367 to its namesake, Edward of Woodstock (the "Black Prince").

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