The best lever to stimulate platinum demand is platinum jewellery promotion, which provides the best return “by a country mile", Anglo American Platinum CEO Chris Griffith said on Tuesday. Speaking at the Platinum Group Metals (PGMs) industry day, Griffith said that the work done by the platinum jewellery promoting organisation, Platinum Guild International, had proved that jewellery investment was able to deliver the equivalent of three mines a year of the size of the Mogalakwena mine in Limpopo.