There has been some interest in creating laws against insider trading for commodities, but such laws don't exist, and this case is just a class action of jewelers angry about manipulation on an obscure metal commodity. The LIBOR scandal was a price fixing operation (most or all banks that could set the rate were colluding for collective interest), and the levels of impact are different worlds. The LIBOR scandal was a blatantly criminal action of an almost incalculable scale, and it has had little impact, so what does that say about a class action for legal trading activity?