WARNING: This article contains spoilers from Antiques Roadshow . Antiques Roadshow guests were in disbelief when they discovered just how much their ballerina brooch was worth. In a previous episode of the BBC daytime show, expert Joanna Hardy met with a mother and daughter duo at Beaumaris Castle in north Wales who presented her with a ballerina brooch. Hardy believed that it could have been made by world renowned French jewellers Van Cleef and Arpels but couldn’t quite put her finger on its