Actress Cally Kwong is so passionate about jewels she took some time off from her busy filming schedule to do a jewellery course in New York last year. Cally, who can be seen in the hit TV series A Kindred Spirit on TVB Jade every week night, says gems never go out of fashion and are an excellent investment. 'Diamonds, sapphires, emeralds and rubies - I love them all. I also like semi-precious stones like tourmalines and peridots, which are very fashionable now.' Cally, recently divorced from actor Ray Lui, has just finished writing a beauty book, to be launched in Hong Kong at the start of next month. Modelling a pink diamond ring estimated at $8 million and a diamond necklace at $8.7 to $11 million - part of a Christie's auction of jewels and watches on Monday - Cally has no qualms about buying diamonds for herself. 'If I wait for a man to buy me diamonds, I may have to wait for a long, long time.'