The brooch was from Cartier's Tutti Frutti range, which was popular with 1930s high society A tiny brooch discovered among other worthless costume jewellery has sold for almost £20,000 at auction.

The brooch by Cartier is its signature panther design in gold and onyx with emerald eyes. It sits on an impressive piece of white agate. It was created by the French house in 1972 and that same ...