Since 2006, the company operated as two segments: a luxury retail jewelry and watch division under the iconic Harry Winston brand name and a diamond mining business.
Warner agrees that Ms Rowling's creation is a different sort of commercial property, one with long-term potential that could be damaged by a typical Hollywood marketing blitz, says Diane Nelson, the studio's global brand manager for Harry Potter.
The top diamond jewelry brand in America, Harry Winston, had descended into chaos after its founder died in 1978 and sons Ronald and Bruce engaged in a nasty legal battle that crippled the business.