25-pound record-breaker goes up for auction
                                
                                
                                    (Newser) -
                                    The biggest cut emerald in the world will be auctioned Saturday and is expected to go for up to $2.5 million. The gigantic green stone weighs 57,500 carats—or 25 pounds—and was discovered at an undisclosed location in Brazil, reports  Pravda . The emerald, dubbed Teodora, meaning God'...