Cape Town - Legalising international trade in rhino horn will stem the slaughter of the species, MPs heard on Tuesday. "The data suggests that banning of legal, open trade in rhino horn has not resulted in reduced demand for the horn, and has not helped save the rhino from imminent extinction. Escalation in the slaughter of rhino is proof of this. De Lange said it was crucial that the possibility of legalising the trade in rhino horn be investigated."While well-intentioned, this trade ban on legally selling rhino horn seems not to have saved any species or sub-species of rhino, while succeeding to drive the illegal selling of rhino horn underground."SA is reportedly sitting on a 20-ton stockpile of rhino horn. At $65 000/kg, this would be worth - at the current exchange rate - well over R10bn.