Graff Plans Asian Expansion

The Graff Diamonds store on New Bond Street, London.

Graff Diamonds Ltd. is planning to file an initial public offering, most likely in Hong Kong, in order to fund its expansion into Asia, according to several reports.The London-based company, owned by Laurence Graff, is using the IPO to raise $1 billion and increase the value of the company to $5 billion, the Financial Times (subscription