As per media sources, {{Graff}}, whose stores sit on the world's most exclusive shopping streets of the world is planning further expansion in the Asian markets especially on the fast emerging luxury markets of India and China.%% "I can confirm we are considering our options" with regard to a possible Hong Kong initial public offering, said chief financial officer {{Nick Paine}} to a media source . A source familiar with the matter earlier said the IPO was in the pipeline and could raise $1 billion.%% Paine also confirmed plans for store openings in Asia, but declined further comment. Investment bank Rothschild is reported to be advising Graff on the IPO. With an impressive chain of 33 stores worldwide, Graff is reported to count the Sultan and Queen of Brunei and American property mogul Donald Trump among his clients.%% The IPO plan follows a pattern of luxury brands flocking to list in Hong Kong as a platform for a broader expansion into China and beyond.%% The diamonds business in Asia has been booming as consumers in China and India turn to diamond jewellery even in the face of a poor global economic outlook. The two countries, combined with the Gulf, are expected to overtake the United States in the next four years as the top diamond consumers.%%