Hong Kong, March 18 -- Diamonds are forever.Ever since Gabrielle "Coco" Chanel releasedher No 5 perfumea hundred years ago, women (and men) have clamoured to wear the iconic scent. No other fragrance in the world has maintained its desirability for as long as the No 5 has. To honour its unparalleled, century-long legacy, the house ofChanelhas decided to immortalise its signature scent ina high jewellery collectioncalled "Collection Ndeg5".

Designed by Patrice Leguereau, director of Chanel's Fine Jewellery Creation Studio, the collection is the first of its kind to be dedicated solely to aperfume. It comprises 123 jewellery pieces in all, each one inspired by the many different facets of the No 5. The piece de resistance is the 55.55 neck...