The covered Jade Market with hundreds of stalls on either side of Battery Street is a good place to by jad-ish souvenirs like an little amulet to decorate your mobile phone, inexpensive costume jewelry or a Buddha figurine. But unless you know jade, for serious jade purchases go to an established jeweler like Chow Tai Fook with over 2000 selling points in China or Chinese Arts and Crafts in Pacific Place.