9news.com.au | Thief posed as Gumtree buyer to steal $5k gold nugget 9news.com.au A Gumtree advertisement has cost a Perth couple thousands after a thief snatched their gold nugget. The couple's insurer won't cover the cost because the thief had been invited into their home when he was posing as a buyer. Karen and Joseph Corkhill ... The shocking moment a man gives chase as a thief posing as a Gumtree buyer makes off with his $5000 gold nugget |