A starfish brooch by René Boivin sold for €235,000 (£209,820) by Chayette et Cheval in Paris on February 9.

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The articulated, five-arm brooch, signed René Boivin Paris to the clasp, had been estimated at €80,000-120,000 in the February 9 auction but six bidders on the phone and one in the room pursued the jewel to more than double that guide, with the hammer falling at €235,000 (£209,820) to a foreign private collector. It was the highest price of the auction.

The Starfish brooch was part of a group of six jewels by Boivin consigned from the same family collection.

The group also included a yellow gold and gemset parure comprising a brooch and a pair of earrings of flowerhead form and an articulated bracelet, all set with citrines and diamonds.

Originally offered as three lots, these were reunited to sell together for €29,000 (£28,890).

The buyer’s premium was 26%.